Vamsi Krishna Komarala

Solar Photovoltaics group

Department of Energy Science and Engineering

Indian Institute of Technology Delhi

Publication

 

Publications in Refereed International Journals

 

2022

 

   [1].            Thermal stability analysis of molybdenum-based carrier-selective solar cells

Mrutyunjay Nayak and Vamsi K Komarala

IEEE Transactions on Electron Devices 69 (2022) 3251

 

   [2].            Effect of gas flow rate in PECVD of amorphous silicon thin films for interface passivation of silicon heterojunction solar cells

Ashutosh Pandey, Shrestha Bhattacharya, Jagannath Panigrahi, Sourav Mandal Vamsi K Komarala

Physica Status Solidi A (2022) published online doi.org/10.1002/pssa.202200183

2021

 

   [3].            Progress on the intrinsic a-Si:H films for interface passivation of silicon heterojunction solar cells:A review

Jagannath Panigrahi and Vamsi K Komarala

Journal of Non-crystalline Solids 574 (2021) 121166

 

   [4].            Numerical simulations of carrier-selective contact silicon solar cells: Role of carrier selective layers electronic properties

Krishna Singh, Deepak K Singh and Vamsi K Komarala

Journal of Computational Electronics 20 (2021) 1815

 

   [5].            Effective suppression of nanotextured black silicon surface recombination channels by aluminum oxide: comparison from sputtered and ALD grown films

Piyush K. Parashar, S. A. Kinnunen, T. Sajavaara, J. Jussi Toppari, and Vamsi K. Komarala

Semiconductor Science and Technology Online

 

   [6].            Nanocrystalline silicon thin film growth and application for silicon heterojunction solar cells: A short review

Mansi Sharma, Jagannath Panigrahi and Vamsi K Komarala

Nanoscale Advances 3 (2021) 3373

 

   [7].            Degradation study of carrier-selective contact silicon solar cells with ageing: Role of silicon surface morphology

Krishna Singh, Mrutyunjay Nayak, Deepak K Singh and Vamsi K Komarala

Solid-State Electronics 179 (2021) 107987

 

   [8].            Carrier transport mechanisms of Nickel Oxide based carrier selective silicon heterojunction solar cells: Role of SiOx passivation layer

Sapna Mudgal, Mrutyunjay Nayak, Sonpal Singh and Vamsi K Komarala

Solid State Communications 334-335 (2021) 114391

 

   [9].            Investigation of optoelectronic properties indium oxide thin films with hydrogen and oxygen gas concentration variation during sputtering

Sourav Mandal, Ashutosh Pandy and Vamsi K Komarala

Materials Science in Semiconductor Processing 123 (2021) 105576

2020

 

[10].            Investigation of silicon surface passivation by sputtered amorphous silicon and thermally evaporated by molybdenum oxide films using temperature- and injection-dependent lifetime spectroscopy

Krishna Singh, Mrutyunjay Nayak, Sonapl Singh and Vamsi K Komarala

Semiconductor Science and Technology 35 (2020) 125017.

 

[11].            Analysis of process-dependent electrical properties of silicon heterojunction solar cells by Quantum Efficiency and temperature-depedent current density-voltage measurements

S. Mudgal, S. P. Singh and V K Komarala

Physica Status Solidi A 217 (2020) 1900782.

 

[12].            Investigation of anomalous behavior in J-V and Suns-Voc characteristics of carrier-selective contact silicon solar cells

M. Nayak, S. Mudgal, S. P. Singh and V K Komarala

Solar Energy 201 (2020) 307.

 

2019

 

[13].            Nickel oxide hole-selective heterocontact for silicon solar cells: Role of SiOx interlayer on device performance

M. Nayak, S. Mandal, A. Pandey, S. Mudgal, S. P. Singh and V. K. Komarala

Solar Rapid Research Letters 3 (2019) 1900261.

 

[14].            Sputter deposited sub-stoichiometric MoOx thin film as hole-selective contact layer for silicon-based heterojunction devices

Piyush K. Parashar and Vamsi K. Komarala

Thin Solid Films 682 (2019) 76.

 

[15].            Effect of textured silicon pyramids size and chemical polishing on the performance of carrier-selective contact heterojunction solar cells

K. Singh, M. Nayak, S. Mudgal, S. P. Singh and V K Komarala

Solar Energy 183 (2019) 469.

 

[16].            Carrier-selective based silicon solar cells processed at room temperature using industrially feasible Cz wafers

M. Nayak, K. Singh, S. Mudgal, S. Mandal, S. P. Singh and V K Komarala

Physica Status Solidi A 216 (2019) 1900208.

[Article appeared under Hot Topic: Solar cells; as original paper on Wiley Online Library website: doi/toc/10.1002/(ISSN)1614-6840.hottopic-solarcells]

 

 

[17].            Thermal atomic layer deposition of AlOxNy thin films for surface passivation of nano-textured flexible silicon

Piyush K. Parashar, S. A. Kinnunen, T. Sajavaara, J. Jussi Toppari, and Vamsi K. Komarala

Solar Energy Materials and Solar Cells 193 (2019) 231.

2018

 

[18].            Investigation of electrical parameters of amorphous-crystalline silicon heterojunction silicon solar cell: Correlation between carrier dynamics and S-shape of current density-voltage curve

S. Mudgal, S P Singh and V K Komarala

IEEE Journal of Photovoltaics 8 (2018) 909

 

[19].            Enhancement of Y123 dye-sensitized solar cells performance using plasmonic gold nanorods

P S Chandrasekhar, P K Parashar, S K Swami, V Dutta and V K Komarala

Physical Chemistry Chemical Physics 20 (2018) 9651

 

[20].            Higher efficiency perovskite solar cells using Au@SiO2 core-shell nanoparticles

P S Chandrasekhar, A Dubey, K M Reza, M D N Hasan, B Bahrami V K Komarala J D Hoefelmeyer et al.,

Sustainable Energy and Fuels 2 (2018) 2260.

 

[21].            Effect of light incident angle on Fano resonance loss mediation in silver nanoparticles integrated thin silicon wafers

P K Parashar, S K Sardana and V K Komarala

Plasmonics 13 (2018) 1577.

2017

[22].            Engineered optical properties of silver-aluminium alloy nanoparticles embedded in SiON matrix for maximizing light confinement in plasmonic silicon solar cells

P K Parashar and V K Komarala

Scientific Reports 7 (2017) 12520.

 

[23].            Fabrication and characterization of dye-sensitized solar cells: A photographic guide

N Chander and V K Komarala

Indian Journal of Pure and Applied Physics 55 (2017) 737.

[24].            Graphene/ZnO nanocomposite as an electron transport layer for perovskite solar cells: the effect of graphene concentration on photovoltaic performance

P S Chandrasekhar and V K Komarala

RSC Advances 7 (2017) 28610

 

[25].            Plasmonic perovskite solar cells utilizing Au@SiO2 core-shell nanoparticles

N K Pathak, N Chander, V K Komarala and R P Sharma

Plasmonics 12 (2017) 237

 

[26].            Plasmonic silver nanowires for higher efficiency dye-sensitized solar cells

P S Chandrasekhar, H Elbohy, B Vaggensmith, A Dubey, K M Reza, V K Komarala and Q Qiao

Materials Today Energy 5 (2017) 237.

 

[27].            Efficiency enhancement of silicon solar cells with vertically aligned ZnO nanorod arrays as an antireflection layer

S K Sardana, P S Chandrasekhar, R Kumar and V K Komarala

Japanese Journal of Applied Physics 56 (2017) 040305

 

In 2016

 

[28].            Double-layer antireflection from silver nanoparticle integrated SiO2 layer on silicon wafer: effect of nanoparticle morphology and SiO2 film thickness

P K Parashar, R P Sharma and V K Komarala

Journal of Physics D: Applied Physics 50 (2016) 035105

 

[29].            Plasmonic silicon solar cell comprised of aluminium nanoparticles: Effects of nanoparticle’s self-limiting native oxide shell on optical and electrical properties

P K Parashar, R P Sharma and V K Komarala

Journal of Applied Physics 120 (2016) 143104.

 

[30].            Role of textured silicon surface in plasmonic light trapping for solar cells: the effect of pyramids width and height

E Thouti, A K Sharma and V K Komarala

IEEE Journal of Photovoltaics 6 (2016) 1403.

 

[31].            Investigation of parasitic absorption and charge carrier recombination losses in plasmonic silicon solar cells using quantum efficiency and impedance spectroscopy

E Thouti and V K Komarala

Solar Energy 132 (2016) 143.

 

[32].            Optical properties of hybrid plasmonic structure on silicon using transparent conducting-silver nanoparticles-silicon dioxide layers: the role of conducting oxide layer thickness in antireflection

S K Sardana and V K Komarala

Journal of Optics 18 (2016) 075004

[33].            Influence of SiO2 spacer layer on performance of plasmonic textured silicon solar cell

S K Sardana and V K Komarala

Plasmonics 11 (2016) 1549

 

[34].            Fabrication of perovskite films using an electrostatic assisted spray technique: the effect of electric field on morphology, crystallinity and solar cell performance

P S Chandrasekhar, N Kumar, S K Swami, V Dutta and V K Komarala

Nanoscale 8 (2016) 6792.

 

[35].            Enhancement of dye-sensitized solar cell efficiency via incorporation of upconverting nanoparticles as spectral converters

N Chander, A F Khan, V K Komarala, S Chawla and V Dutta

Progress in Photovoltaics: Research and Applications 24 (2016) 692.

 

[36].            Enhancement of minority carrier lifetimes in n- and p-type silicon wafers using silver nanoparticle layers

E Thouti, S Kumar and V K Komarala

Journal of Physics D: Applied Physics 49 (2016) 015302.

 

In 2015

 

[37].            Effect of graphene and Au@SiO2 core-shell nano-composite on photoelectrical performance of dye-sensitized solar cells based on N-doped titania nanotubes 

P S Chandrasekhar and V K Komarala

RSC Advances 5 (2015) 84423

 

[38].            Plasmonic effect of Ag@TiO2 nanotubes on dye-sensitized solar cell performance based on reduced grapheme oxide-TiO2 nanotube composite

P S Chandrasekhar, N Chander, O Anjaneyulu and V K Komarala

Thin Solid Films   594 (2015) 45.

 

[39].            Improving the short-wavelength spectral response of silicon solar cells by spray deposition of YVO4:Eu3+ down-shifting phosphor nanoparticles

N Chander, S K Sardana, P K Parashar, A F Khan, S Chawla, V K Komarala

IEEE Journal of Photovoltaics 5 (2015) 1373.

[40].            Improved stability and enhanced efficiency of dye-sensitized solar cells by using europium doped yttrium vanadate down-shifting nanophosphor

N Chander, A F Khan and V K Komarala

 RSC Advances 5 (2015) 66057

 

[41].            Morphology and optical properties of sputter deposited silver nanoparticles on plain, textured and antireflection layer coated textured silicon

S K Sardana, V S N Chava and V K Komarala

Applied Surface Science 347 (2015) 651.

 

[42].            Optical Properties of Silver Nanoparticles Integrated Graphene Oxide Thin Films on Glass and Silicon Substrates

         E Thouti, V Kumar, P K Parashar, G B Reddy, R Pasricha, V K Komarala

         Plasmonics, 10 (2015) 1063.

 

In 2014

 

[43].            Size and concentration effects of gold nanoparticles on optical and electrical properties of plasmonic dye-sensitized solar cells

N Chander, A F Khan, E Thouti, P S Chandrasekhar, V Dutta and V K Komarala

Solar Energy 109 (2014) 11.

 

[44].            Solid state plasmonic dye-sensitized solar cells based on solution-processed perovskite CsSnI3 as the hole transporter

      N Chander, P S Chandrasekhar and V K Komarala

      RSC Advances 4 (2014) 55658.

 

[45].            Internal quantum efficiency analysis of plasmonic textured silicon solar cells: surface plasmon resonance and off-resonance effects

      E Thouti, A K Sharma, S K Sardana and V K Komarala

      Journal of Physics D: Applied Physics 47 (2014) 425101.

Renewable Energy Innovation highlighted as a futuristic article in solar cells area; website http://reginnovations.org/category/solar-cells/

 

[46].            Photocurrent enhancement by surface plasmon resonance of gold nanoparticles in spray deposited large area dye-sensitized solar cells

       N Chander, P Singh, A F Khan, V Dutta and V K Komarala

       Thin Solid Films 568 (2014) 74.

 

[47].            Reduced ultraviolet light-induced degradation and enhanced light harvesting using YVO4: Eu3+ down-shifting nano-phosphor layer in organometal halide perovskite solar cells

N Chander, A F Khan, P S Chandrasekhar, E Thouti, V Dutta and V K Komarala,

Applied Physics Letters 105 (2014) 033904.

Most accessed/read article in energy conversion and storage area, highlighted in journal website and made it available for free

 

[48].            Influence of surface plasmon resonances’ of silver nanoparticles on optical and electrical properties of textured silicon solar cell

S K Sardana, V S N Chava, E Thouti, N Chander, S Kumar and V K Komarala

Applied Physics Letters 104 (2014) 073903.

 

[49].            In-situ synthesis of Au-CdS plasmonic photocatalyst by continuous spray pyrolysis and its visible light photocatalysis

N Kumar, V K Komarala and V Dutta

Chemical Engineering Journal 236 (2014) 66.

In 2013

[50].            Optical properties of Ag nanoparticles deposited on silicon substrate

Eshwar Thouti, Nikhil Chander, Viresh Dutta and Komarala Vamsi K

Journal of Optics 15 (2013) 035005

Most read article, downloaded 5,480 times & highlighted in Editorial news

Rated 3rd best paper published in the year 2013 by the Journal of Optics *

*M Howland & J McKenna, “2015 JOPT research excellence award” J. Opt. 17 (2015) 100201.

In 2012

 

[51].            Deposition of gold nanoparticle films using spray pyrolysis technique: Tunability of SPR band by electric field

N. Kumar, V K Komarala and V Dutta

Physica Status Solidi, Rapid Research Letters 6 (2012) 406.

 

[52].            Time-resolved photoluminescence properties of CuInS2/ZnS nanocrystals: Influence of intrinsic defects and external impurities

V K Komarala, C Xie, Y Wang, J Xu and M Xiao

Journal of Applied Physics 111 (2012) 124314.

In 2011

[53].            Radiative power of a dipole in the proximity of a dielectric interface: a case study of a quantum-dot exciton transition dipole

V K Komarala and M Xiao

Semiconductor Science and Technology 26 (2011) 075007.

 

From 2003 to 2010

 

[54].            Nonlinear optical properties of Er3+/Yb3+-doped NaYF4 nanocrystals 

V K Komarala, Y Wang and M Xiao

Chemical Physics Letters 490 (2010) 189.

 

[55].            Surface plasmon density of states at the metal-dielectric interface: Dependence of metal layer thickness and dielectric material 

V K Komarala, W H Guo and M Xiao

Journal of Applied Physics 107 (2010) 014309.

 

[56].            Controlling fluorescence intermittency of a single colloidal CdSe/ZnS quantum dot in a half cavity 

Y Zhang, V K Komarala, C Rodriguez and M Xiao

Physics Review B (Rapid Communication) 78 (2008) 241301.

 

[57].            Surface plasmon enhanced Förster resonance energy transfer between the CdTe quantum dots

V K Komarala, A L Bradley, Y P Rakovich, S J Byrne Y K Gunko,  A L Rogach

Applied Physics Letters 93 (2008) 123102.

 

[58].            Off-resonance surface plasmon enhanced spontaneous emission from CdTe quantum dots

V K Komarala Y P Rakovich A L Bradley Y K Gunko, N Gaponik, A Eychmuller

Applied Physics Letters 89 (2006) 253118.

 

[59].            Emission properties of colloidal quantum dots on polyelectrolyte multilayers 

V K Komarala, Y P Rakovich, A L Bradley, S J Byrne S A Corr and Y K Gunko

 Nanotechnology 17 (2006) 4117.

 

[60].            Growth of cubic and hexagonal CdTe thin films by pulsed laser deposition 

S K Pandey, U Tiwari, R Raman, K V Krishna, V Dutta and K Zimik

Thin Solid Films 473 (2005) 54.

 

[61].            Effect of in situ CdCl2 treatment on spray deposited CdTe/CdS heterostructure 

K Vamsi Krishna and V Dutta,

Journal of Applied Physics 96 (2004)3962.

 

[62].            In-situ CdCl2-treated CdTe film surface analysis by X-ray photoelectron spectroscopy 

K Vamsi Krishna and V Dutta,

Physica Status Solidi (a) 201 (2004) 2076.

 

 

[63].            Depth profiling study of in situ CdCl2 treated CdTe/CdS heterostructure with glancing angle incidence X-ray diffraction 

K Vamsi Krishna and V Dutta,

Thin Solid Films 450 (2004) 255.

 

[64].            Effect of electric field on spray deposited CdTe thin films 

K Vamsi Krishna, V Dutta and P D Paulson,

Thin Solid Films 444 (2003) 17.

 

[65].            Spray deposition of CdTe-Te thin films using ethylene-diamine-tetra-acetic acid as a complexing agent in the precursor solution 

K Vamsi Krishna and V Dutta

Solar Energy Materials & Solar Cells 80 (2003) 247.

 

[66].            Effect of in-situ CdCl2 treatment on spray deposited CdTe films: Photoluminescence study 

K Vamsi Krishna and V Dutta

Physica Status Solidi (a) 198 (2003) 443.

 

Publications in Conference Proceedings

 

   [1].            Nickel oxide based hole selective contact silicon heterojunction solar cells

M. Nayak, A. Pandey, S. Mandal and V. K. Komarala

11th International Conference on Crystalline Silicon Photovotlaics (Online)

American Institute of Physics Conference Proceedings (Nov. 2021)

 

   [2].            Electrical characterization and defect states analysis of Ag/ITO/MoOx/n-SI/LiFx/Al carrier-selective contact silicon solar cells processed at room-temperature

M. Nayak, S. Mudgal, S. Mandal, S. Singh and V. K. Komarala

9th International Conference on Crystalline Silicon Photovotlaics (in Leuven, Belgium)

American Institute of Physics Conference Proceedings 2147 (2019) 040014

 

   [3].            Study of anomalous S-shape in current density-voltage characteristics of carrier-selective contact molybdenum oxide and amorphous silicon based heterojunction silicon solar cells

S. Mudgal, M. Nayak, S. Singh and V. K. Komarala

9th International Conference on Crystalline Silicon Photovotlaics (in Leuven, Belgium)

American Institute of Physics Conference Proceedings 2147 (2019) 020009

 

   [4].            Characterization of sputtered a-Si:H passivated silicon surface by temperature- and injection-dependent lifetime spectroscopy

K. Singh, S. Mandal, S. Singh and V. K. Komarala

9th International Conference on Crystalline Silicon Photovotlaics (in Leuven, Belgium)

American Institute of Physics Conference Proceedings 2147 (2019) 020014

 

   [5].            Growth of silver nanoparticles on titanium dioxides layer for plasmonic-based solid-state solar cells

S K Sardana, P K Parashar, P S Chandrashekar, S K Srivastava, V K Komarala

AIP Conference Proceedings 2115 (2019) 030626.

 

   [6].            Interfacial spectral response under voltage and light bias to analyse low voltage in amorphous-crystalline silicon heterojunction solar cell with S-shape characteristics

Sapna Mudgal, Sonpal Singh and Vamsi Krishna Komarala

   7th World Conf. on Photovoltaic Energy Conversion (Waikoloa, HI, USA), 2018, 2158-2161.

 

   [7].            Tunable plasmonic properties from Ag-Au alloy nanoparticles film

S. K. Sardana, S. K. Srivastava and V K Komarala

International Workshop on Physics of the Semiconductor and Devices (2017) 415

 

   [8].            Mediating broad band light trapping in silicon solar cell by aluminium nanoparticles with native oxide shell

P K Parashar, R P Sharma and V K Komarala

Materials Today: Proceedings 4 (2017) 12708.

 

   [9].            ZnO nanorods as antireflective coatings on silicon wafers

S K Sardana, R Kumar, P S Chandrasekhar and V K Komarala

American Institute of Physics Conference Proceedings 1832 (2017) 050140

 

[10].            Enhanced Forster resonance energy transfer between the CdTe quantum dots in proximity to gold nanoparticles
V K Komarala, A L Bradley, Y P Rakovich, S J Byrne Y K Gunko,  A L Rogach

The International Society for Optical Engineering (SPIE) 6641 (2007) 66410Y.

 

[11].            Interaction of surface plasmons with CdTe quantum dot excitons  
K K Vamsi, Yu. P. Rakovich, A. L. Bradley, et al., 

The International Society for Optical Engineering (SPIE) 5955 (2005) 59550L.

 

[12].            Spray deposition of CdS thin films using a nanoparticle ink precursor

V Dutta, K V Krishna and L Roy

The International Society for Optical Engineering (SPIE) 4746 II, (2002) 1072-1074