Ganesha Krishna V S

Scopus Publications

Oxygen-Deficient TiO2-Based Dual-Functional Electrochromic Smart Windows: Achieving High Coloration Efficiency and Energy Storage Through Oxygen Defect Engineering
Mukhesh K Ganesha, Fuad Seneen, Poornachandra G Kulkarni, Hafis Hakkeem, Ganesha Krishna V S, Kumar Shubham, Ashutosh K Singh
Small, 2025
Electrochromic smart windows (ECSWs) have yet to achieve widespread adoption, primarily due to the high cost associated with the exorbitant material used presently. In this study, we explore titanium dioxide (TiO2), a more abundant and cost‐effective alternative, as an electrochromic (EC) material with potential for enhanced performance. We address the issue of TiO2’s low coloration efficiency (CE) by introducing oxygen defects. Using reactive sputtering, we varied the oxygen flow rate during TiO2 deposition, creating oxygen defect concentrations between 29.9% and 41% and interaction of film with different electrolytes, EC, and energy performance was studied. This led to significant improvements in opacity and EC performance, with only 338 nm thick film, the device shows 55%, 47%, and 44% modulation in solar, luminous, and NIR transmittance and the film shows high CE (22.79 and 26.99 cm2 C−1 at 550 and 632 nm, respectively). The film also exhibited excellent dual‐functionality, with an areal capacitance (Ca) of 34 mF cm−2, demonstrating its energy storage capability. The scalability of the process was confirmed by powering a timer display for 11 minutes with a large‐area (25 cm2) ECSW. This work paves the way for affordable, dual‐functional ECSWs, offering a sustainable solution for modern infrastructure applications.
Ultrathin sputtered NiO films for enhanced electrochromic performance in smart windows
Ganesha Krishna V. S., Mukhesh K. Ganesha, Chirag Sarthi J., Hafis Hakkeem, Ashutosh K. Singh, Giridhar U. Kulkarni
Journal of Materials Chemistry A, 2024
Optimizing ultrathin NiO layers via sputtering to achieve cost-effective and energy-efficient electrochromic smart windows for modern infrastructure and automobile industries.
Fast response and multi-color photodetection in p-type Cu:CdS thin films
Ganesha Krishna V. S., Pawan Kumar, Gowrish Rao K., Mahesha M. G.
Materials Advances, 2024
We present an analysis of p-type CdS thin films deposited on glass substrates with the addition of Cu dopants.
A review on integration of Zn based buffer layers in II-generation solar cells for enhanced efficiency
Ganesha Krishna V S, Seemesh Bhaskar, Mahesha M G
Cogent Engineering, 2024
Photon-driven technologies encompass the utility of carefully engineered materials for myriad applications. Over the past decade, thin films of II–VI chalcogenide materials have emerged as versatile candidates for the efficient construction of photovoltaic devices. The buffer layer which serves as a lattice fixer in solar cells plays a role in determining the photon-driven processes between the absorber and the window layers, significantly affecting the performance of the working device. However, mostly used buffer layer, CdS is highly toxic. Recently, there is quest to replace the highly toxic cadmium sulfide (CdS) buffer layers with Zn-based materials to obtain high-efficiency solar cells. Among the II–VI compounds, zinc sulfide (ZnS) and zinc selenide (ZnSe) present promising futuristic scope for research in the photovoltaics field and are recognized as alternatives to the widely used toxic CdS buffer layer. Although significant research has been devoted in this direction, a comprehensive review capturing the latest advancements in photon-driven technologies pertaining to Zn based buffer layers in photovoltaics, has not yet been conducted. In light of these observations, we present a review focusing on the recent progress in the incorporation of Zn based buffer layers into different solar cells constituting CdTe, CIGS, and CZTS. The light matter interactions that depend on the thickness, and the band alignment of the buffer layer with the absorber is discussed in detail.
(Mg,Mn)-dual doping synergism towards luminescence and electrical properties of ZnO/p-Si heterojunction diodes
Ganesha Krishna V. S., Mahesha M. G.
Rsc Advances, 2023
Preparation of a MnMg:ZnO thin film device.
Analysis of surface properties of Mg doped ZnS and ZnSe thin films through x-ray photoelectron spectroscopy
V.S. Ganesha Krishna, M.G. Mahesha
Journal of Electron Spectroscopy and Related Phenomena, 2023
Assessment of the anharmonic phonon decay, Fröhlich interactions, and phonon lifetime in Zn0.98Mn0.02S thin films through temperature-dependent Raman spectroscopy
V S Ganesha Krishna, M G Mahesha
Journal of Raman Spectroscopy, 2023
This report accounts for the occurrence of the temperature‐induced variation in the phonon properties and the spatial variation in the Raman spectra for the spray‐deposited Zn0.98Mn0.02S thin films. The study of the temperature dependence of the Raman line position, line width, and the phonon lifetime using the theoretical models that consider the thermal expansion and three‐ and four‐phonon anharmonic effects is the novelty of this work. The lifetime of the LO phonon in Zn0.98Mn0.02S thin film was as low as 0.234 ps, indicating material suitability for optical limiting applications. The intensity ratio I2LO/I1LO ranges within 0.5 at most of the (x, y) positions in the Raman mapping data, indicating the nanocrystalline nature of Zn0.98Mn0.02S.
Spectroscopic and electrical analysis of spray deposited copper oxide thin films
Adithya Prakash, Ganesha Krishna V S, Sahana Nagappa Moger, M.G. Mahesha
Materials Today Communications, 2022
Spectroscopic valuation of phonon lifetime and surface characteristics of Zn0.96Mg0.04S thin film
Ganesha Krishna V S, M. G. Mahesha
Journal of Chemical Physics, 2022
The anharmonic properties of the longitudinal optical (LO) phonon mode of Mg-doped ZnS (Zn0.96 Mg0.04S) are investigated using the Balkanski and Klemens models on the temperature-dependent Raman spectra. The variation in the position of the Raman line, peak width, and phonon lifetime with temperature was fitted using three and four phonon decay mechanisms. The values of the anharmonic fitting parameters indicated low anharmonicity. A lifetime of ∼0.17 ps at 90 K indicated a fast phonon decay. In addition, the thin film is analyzed to evaluate its surface characteristics using Raman mapping that showed chemical homogeneity over a large area of the film. Furthermore, we analyzed spatial variations of Raman line intensity, peak area, linewidth, and line position of the LO phonon mode. Raman analysis helped in understanding the phonon–phonon interaction mechanism in Zn0.96 Mg0.04S thin films.
Analysis of the effect of copper concentration on the structural, spectroscopic, and electrical properties of Cu:ZnO thin films
Ganesha Krishna V S, Mahesha M G
Journal of Alloys and Compounds, 2022
Structural, optical, and electrical characterization of spray-deposited Mg0.02Zn0.98Se thin film for buffer layer application
V. S. Ganesha Krishna, M. G. Mahesha
Journal of Materials Science Materials in Electronics, 2022
“ZnS, an excellent material in photonics” - A review based on Z-scan study
V.S. Ganesha Krishna, M.G. Mahesha
Physica B Condensed Matter, 2022
Influence of the substrate temperature on the structural, optical, and morphological properties of (1 0 1) oriented ZnSe thin films for window applications in solar cells
V.S. Ganesha Krishna, M.G. Mahesha
Materials Today Proceedings, 2022
Spectroscopic investigation of CuxMg0.2−xZn0.8S (x = 0, 0.05, 0.10, 0.15) thin films for deep and dilute blue LED applications
Ganesha Krishna V S, Saikat Chattopadhyay, Kamakhya Prakash Misra, Mahesha M G
Luminescence, 2022
n-ZnO/p-CuZnS heterostructure deposited by spray pyrolysis for photosensor application in the UV region
V.S. Ganesha Krishna, M.G. Mahesha
Sensors and Actuators A Physical, 2021
Role of copper dopant in two-photon absorption and nonlinear optical properties of sprayed ZnS thin films for optical limiting applications
Ganesha Krishna V S, Shivaraj R. Maidur, Parutagouda Shankaragouda Patil, Mahesha M.G.
Physics Letters Section A General Atomic and Solid State Physics, 2021
XPS analysis of ZnS0.4Se0.6 thin films deposited by spray pyrolysis technique
Ganesha Krishna V S, Mahesha M G
Journal of Electron Spectroscopy and Related Phenomena, 2021
Absence of Mn emission in MnxZn(1-x)S thin films grown by spray pyrolysis technique
Ganesha Krishna V S, Mahesha M G
Journal of Luminescence, 2021
Characterization of transparent p-type Cu:ZnS thin films grown by spray pyrolysis technique
V.S. Ganesha Krishna, M.G. Mahesha
Journal of Alloys and Compounds, 2020
Thickness Optimization of ZnO/CdS/CdTe Solar Cell by Numerical Simulation
Devanshi Parashar, V. S. Ganesha Krishna, Sahana Nagappa Moger, Rashmitha Keshav, M. G. Mahesha
Transactions on Electrical and Electronic Materials, 2020
Characterization of spray deposited ternary ZnSxSe(1-x) thin films for solar cell buffers
Ganesha Krishna VS, Mahesha MG
Surfaces and Interfaces, 2020
Enhanced optical nonlinearity in sprayed Mn doped ZnS thin films
V.S. Ganesha Krishna, Shivaraj R. Maidur, Parutagouda Shankaragouda Patil, M.G. Mahesha
Chemical Physics Letters, 2020
Sprayed nanocrystalline ZMS thin films for nonlinear optical device applications
Ganesha Krishna V S, Parutagouda Shankaragouda Patil, Shivaraj R. Maidur, Mahesha MG
Optical Materials, 2019

RECENT SCHOLAR PUBLICATIONS

A NEGATIVE DIFFERENTIAL RESISTANCE (NDR) DEVICE AND A METHOD OF MANUFACTURING THERE OF
C Kumar, S Majumder, GK V S, SK Sahu
IN Patent App. 202,641,048,746 , 2026
2026
An electrochromic device, an anode and processes thereof
GU Kulkarni, AK Singh, GK V S, M K G, C Sarthi
IN Patent App. 202,341,090,016 , 2025
2025
Oxygen‐Deficient TiO2‐Based Dual‐Functional Electrochromic Smart Windows: Achieving High Coloration Efficiency and Energy Storage Through Oxygen Defect Engineering
MK Ganesha, F Seneen, PG Kulkarni, H Hakkeem, G Krishna VS, ...
Small, 2500822 , 2025
2025
Citations: 11
A review on integration of Zn based buffer layers in II-generation solar cells for enhanced efficiency
G Krishna VS, S Bhaskar, M MG
Cogent Engineering 11 (1), 2387260 , 2024
2024
Citations: 6
Ultrathin sputtered NiO films for enhanced electrochromic performance in smart windows
GK VS, MK Ganesha, H Hakkeem, AK Singh, GU Kulkarni
Journal of Materials Chemistry A 12 (30), 19378-19391 , 2024
2024
Citations: 46
Fast response and multi-color photodetection in p-type Cu: CdS thin films
GK VS, P Kumar
Materials Advances 5 (4), 1576-1587 , 2024
2024
Citations: 13
Analysis of surface properties of Mg doped ZnS and ZnSe thin films through x-ray photoelectron spectroscopy
VSG Krishna, MG Mahesha
Journal of Electron Spectroscopy and Related Phenomena 266, 147341 , 2023
2023
Citations: 7
Assessment of the anharmonic phonon decay, Fröhlich interactions, and phonon lifetime in Zn 0.98 Mn 0.02 S thin films through temperature‐dependent Raman …
VS Ganesha Krishna, MG Mahesha
Journal of Raman Spectroscopy 54 (4), 446-452 , 2023
2023
Citations: 4
(Mg, Mn)-dual doping synergism towards luminescence and electrical properties of ZnO/p-Si heterojunction diodes
GK VS, MG Mahesha
RSC advances 13 (46), 32282-32295 , 2023
2023
Citations: 9
Investigation on spray deposited Zn based chalcogenide thin films for optoelectronic applications
GK V S, M M G
http://hdl.handle.net/10603/426897 , 2022
2022
Spectroscopic and electrical analysis of spray deposited copper oxide thin films
A Prakash, GK VS, SN Moger, MG Mahesha
Materials Today Communications 32, 103926 , 2022
2022
Citations: 26
Spectroscopic valuation of phonon lifetime and surface characteristics of Zn 0.96 Mg 0.04 S thin film.
VSG Krishna, MG Mahesha
The Journal of Chemical Physics 157 (1), 014703-014703 , 2022
2022
Citations: 3
Analysis of the effect of copper concentration on the structural, spectroscopic, and electrical properties of Cu: ZnO thin films
GK VS, MG Mahesha
Journal of Alloys and Compounds 899, 163357 , 2022
2022
Citations: 14
Structural, optical, and electrical characterization of spray-deposited Mg 0.02 Zn 0.98 Se thin film for buffer layer application
VSG Krishna, MG Mahesha
Journal of Materials Science: Materials in Electronics 33 (11), 8529-8533 , 2022
2022
Citations: 4
" ZnS, an excellent material in photonics"-A review based on Z-scan study
VS Ganesha Krishna, MG Mahesha
Physica B Condensed Matter 628, 413628 , 2022
2022
Citations: 12
Influence of the substrate temperature on the structural, optical, and morphological properties of (1 0 1) oriented ZnSe thin films for window applications in solar cells
VSG Krishna, MG Mahesha
Materials Today: Proceedings 58, 623-626 , 2022
2022
Citations: 3
Spectroscopic investigation of Cu x Mg 0.2− x Zn 0.8 S ( x = 0, 0.05, 0.10, 0.15) thin films for deep and dilute blue LED applications
GK VS, S Chattopadhyay, KP Misra, M MG
Luminescence 37 (1), 28-39 , 2022
2022
Citations: 2
n-ZnO/p-CuZnS heterostructure deposited by spray pyrolysis for photosensor application in the UV region
VSG Krishna, MG Mahesha
Sensors and Actuators A: Physical 332, 113169 , 2021
2021
Citations: 14
XPS analysis of ZnS0. 4Se0. 6 thin films deposited by spray pyrolysis technique
GK VS, MG Mahesha
Journal of Electron Spectroscopy and Related Phenomena 249, 147072 , 2021
2021
Citations: 51
Role of copper dopant in two-photon absorption and nonlinear optical properties of sprayed ZnS thin films for optical limiting applications
GK VS, SR Maidur, PS Patil, MG Mahesha
Physics Letters A, 127276 , 2021
2021
Citations: 29

MOST CITED SCHOLAR PUBLICATIONS

XPS analysis of ZnS0. 4Se0. 6 thin films deposited by spray pyrolysis technique
GK VS, MG Mahesha
Journal of Electron Spectroscopy and Related Phenomena 249, 147072 , 2021
2021
Citations: 51
Ultrathin sputtered NiO films for enhanced electrochromic performance in smart windows
GK VS, MK Ganesha, H Hakkeem, AK Singh, GU Kulkarni
Journal of Materials Chemistry A 12 (30), 19378-19391 , 2024
2024
Citations: 46
Characterization of transparent p-type Cu: ZnS thin films grown by spray pyrolysis technique
VSG Krishna, MG Mahesha
Journal of Alloys and Compounds 848, 156568 , 2020
2020
Citations: 37
Thickness optimization of ZnO/CdS/CdTe solar cell by numerical simulation
D Parashar, VSG Krishna, SN Moger, R Keshav, MG Mahesha
Transactions on Electrical and Electronic Materials 21 (6), 587-593 , 2020
2020
Citations: 33
Role of copper dopant in two-photon absorption and nonlinear optical properties of sprayed ZnS thin films for optical limiting applications
GK VS, SR Maidur, PS Patil, MG Mahesha
Physics Letters A, 127276 , 2021
2021
Citations: 29
Spectroscopic and electrical analysis of spray deposited copper oxide thin films
A Prakash, GK VS, SN Moger, MG Mahesha
Materials Today Communications 32, 103926 , 2022
2022
Citations: 26
Characterization of spray deposited ternary ZnSxSe (1-x) thin films for solar cell buffers
GK VS, MG Mahesha
Surfaces and interfaces 20, 100509 , 2020
2020
Citations: 26
Enhanced optical nonlinearity in sprayed Mn doped ZnS thin films
VSG Krishna, SR Maidur, PS Patil, MG Mahesha
Chemical Physics Letters 750, 137457 , 2020
2020
Citations: 22
Analysis of the effect of copper concentration on the structural, spectroscopic, and electrical properties of Cu: ZnO thin films
GK VS, MG Mahesha
Journal of Alloys and Compounds 899, 163357 , 2022
2022
Citations: 14
n-ZnO/p-CuZnS heterostructure deposited by spray pyrolysis for photosensor application in the UV region
VSG Krishna, MG Mahesha
Sensors and Actuators A: Physical 332, 113169 , 2021
2021
Citations: 14
Absence of Mn emission in MnxZn (1-x) S thin films grown by spray pyrolysis technique
GK VS, MG Mahesha
Journal of Luminescence 230, 117716 , 2021
2021
Citations: 14
Fast response and multi-color photodetection in p-type Cu: CdS thin films
GK VS, P Kumar
Materials Advances 5 (4), 1576-1587 , 2024
2024
Citations: 13
" ZnS, an excellent material in photonics"-A review based on Z-scan study
VS Ganesha Krishna, MG Mahesha
Physica B Condensed Matter 628, 413628 , 2022
2022
Citations: 12
Sprayed nanocrystalline ZMS thin films for nonlinear optical device applications
GK VS, PS Patil, SR Maidur, MG Mahesha
Optical Materials 96, 109304 , 2019
2019
Citations: 12
Oxygen‐Deficient TiO2‐Based Dual‐Functional Electrochromic Smart Windows: Achieving High Coloration Efficiency and Energy Storage Through Oxygen Defect Engineering
MK Ganesha, F Seneen, PG Kulkarni, H Hakkeem, G Krishna VS, ...
Small, 2500822 , 2025
2025
Citations: 11
(Mg, Mn)-dual doping synergism towards luminescence and electrical properties of ZnO/p-Si heterojunction diodes
GK VS, MG Mahesha
RSC advances 13 (46), 32282-32295 , 2023
2023
Citations: 9
Analysis of surface properties of Mg doped ZnS and ZnSe thin films through x-ray photoelectron spectroscopy
VSG Krishna, MG Mahesha
Journal of Electron Spectroscopy and Related Phenomena 266, 147341 , 2023
2023
Citations: 7
A review on integration of Zn based buffer layers in II-generation solar cells for enhanced efficiency
G Krishna VS, S Bhaskar, M MG
Cogent Engineering 11 (1), 2387260 , 2024
2024
Citations: 6
Assessment of the anharmonic phonon decay, Fröhlich interactions, and phonon lifetime in Zn 0.98 Mn 0.02 S thin films through temperature‐dependent Raman …
VS Ganesha Krishna, MG Mahesha
Journal of Raman Spectroscopy 54 (4), 446-452 , 2023
2023
Citations: 4
Structural, optical, and electrical characterization of spray-deposited Mg 0.02 Zn 0.98 Se thin film for buffer layer application
VSG Krishna, MG Mahesha
Journal of Materials Science: Materials in Electronics 33 (11), 8529-8533 , 2022
2022
Citations: 4

Ganesha Krishna V S

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Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS