Nitesh K. Chourasia is currently working as a National Postdoctoral Fellow at the School of Physical Sciences, Jawaharlal Nehru University, India. His research work is to study the MXene-based toxic gas sensor for wearable electronics. Moreover, he has been involved in the development of novel ion-conducting dielectric-based optoelectronic devices using 2D materials.
EDUCATION
PhD from IIT BHU, Varanasi
RESEARCH, TEACHING, or OTHER INTERESTS
Condensed Matter Physics, Philosophy
54
Scopus Publications
788
Scholar Citations
16
Scholar h-index
27
Scholar i10-index
Scopus Publications
Propagation and Interactions of Cos Gaussian Beams in Biased Photovoltaic Lithium Niobate Crystals: An Ab Initio Study Aavishkar Katti, Rakesh Kumar, Nitesh K. Chourasia, Ritesh Kumar Chourasia Advanced Theory and Simulations, 2026 The article presents a comprehensive theoretical examination that combines a detailed analysis of nonlinear beam propagation in biased photovoltaic LNO crystals with first‐principles predictions of electronic and optical properties. The full‐potential linearized augmented plane wave approach inside the generalized gradient approximation, utilizing WIEN2k is used to study the electronic and optical characteristics. Direction‐dependent refractive indices and absorption properties show a strong optical anisotropy and a direct band gap of 3.9 eV. Additionally, we study the propagation and interactions of cos Gaussian beams in biased photovoltaic LNO crystals for the first time. The dynamical evolution equation is solved theoretically by the use of the finite difference method. The direction of the external electric field profoundly affects the propagation and interactions of the cos Gaussian beams, and in the case of LNO, it either supports or opposes the self‐defocusing caused by the photovoltaic effect. We then study the steady state propagation considering various cosine modulation parameters and different external electric fields. When effective self‐focusing rises as a result of an external electric field, self‐trapping and the development of optical spatial solitons, such as breathing solitons and Y‐type breathing solitons, are seen. Soliton characteristics rely on the cos aussian beam's modulation parameter. Lastly, the interaction between two in‐phase and out‐of‐phase cos gaussian beams in a photovoltaic crystal is investigated, considering different separation lengths and cosine modulation constants.
Impedance Spectroscopic and Electrical Equivalent Circuit Analysis of Indium Tin Oxide/n-CdS/p-Si Heterojunction Solar Cell Using SCAPS-1d and Impedance Spectroscopic Modules Prakash Kumar Jha, Ritesh Kumar Chourasia, Ankita Srivastava, Atish Kumar Sharma, Keyur Sangani, et al. Energy Technology, 2025 The impedance spectroscopic (IS) and electrical equivalent circuit analysis of the popular combination indium tin oxide/n‐CdS/p‐Si heterojunction solar cell is being carried out for the very first time in this analytical study using solar cell capacitance simulator (SCAPS)‐1d and the IS module. In this analysis, it is aimed to uncover the device's inherent characteristics for the purpose of future advancements and improvements. Various characteristics and features, as well as the basis for future device improvements, are uncovered through rigorous analysis of the following variables: forward/reverse bias voltage, frequency, illumination intensities (dark and light mode), wavelength‐dependent capacitance–voltage, conductance‐voltage, capacitance–frequency, and capacitance–temperature. Additionally, spectral response (SR) charts that rely on wavelength are created in addition to Nyquist and Bode plots. The acquired impedance data is much enhanced by these displays. Through IS analysis, a potent method for investigating the dynamics of electrical and ionic charges inside cells is revealed. An improved comprehension of the internal voltage and doping profile in the layers is achieved through additional Mott–Schottky analysis. Bode graphs that rely on frequency provide a better way to comprehend the device's dielectric characteristics. The SR curve can be better understood with the help of these graphs.
Engineering the decay time of Ti3C2Tx MXene by gold nanoparticle decoration Gaurav Rajput, Ankita Rawat, Nitesh K Chourasia, Gaurav Jalendra, Govind Gupta, et al. Nanotechnology, 2025 MXenes, specifically Ti3C2T x having peculiar structural and electronic characteristics display not only high surface area, and excellent thermal and electrical conductivity but also have the potential for functionalization. The primary focus of this research is to control the decay time of gold nanoparticle (NP) (Au NP) decorated multilayer Ti3C2T x MXene (Au–Ti3C2T x ) synthesized by a simple two-step selective etching technique. Incorporation of Au NPs in the multilayer Ti3C2T x MXene leads to lattice expansion, micro-strain reduction, and crystallinity improvement, as confirmed by x-ray diffraction analysis. Observation of a well-developed G band in the Au–Ti3C2T x MXene across different Au concentrations by Raman spectroscopy investigations suggests the accumulation of graphitic carbon on the MXene surface which has greatly improved the charge transfer characteristic of the carbide layer. Furthermore, the Au-Ti3C2T x MXene exhibits promising optical properties for different concentrations of gold. The time-resolved photoluminescence spectroscopy studies displayed a reduction in the average decay time (τ av) to ∼30% with increasing gold concentration from 100 to 150 μl in Au NPs solution which is explained based on Au NPs induced surface plasmon resonance. The decoration of Au NPs facilitates the accumulation of carbon on the surface of MXene, resulting in enhanced crystallinity, reduced micro-strain, and decreased decay time. By engineering decay time through the decoration of noble metal NPs onto MXene, it becomes possible to fabricate highly efficient photodetectors and imaging devices. This is especially advantageous in applications where shorter decay times are desired.
Comprehensive Spectroscopic Investigation of MoS2-Solar Cells with Exclusive Zn3P2 as HTL Having Least Lattice Mismatches for 32.55% PCE Atish Kumar Sharma, Ankita Srivastava, Prakash Kumar Jha, Keyur Sangani, Nitesh K. Chourasia, et al. Advanced Theory and Simulations, 2025 In this analytical study, four‐layer MoS2‐based renewable energy photovoltaic cell has been first introduced using SCAPS‐1d. Proposed cell has FTO as window layer, ZnSe as electron transport layer (ETL), MoS2 as absorber layer, and an exclusive Zn3P2 hole transport layer (HTL) with least lattice mismatch of about 1.8%. To explore highest performance through proposed novel solar cell configuration, simulation studies have been done on best possible optimized physical and electrical parameters. Simulated power conversion efficiency, short circuit current, open circuit voltage, and fill factor are 32.55%, 37.75 mA/cm2, 1038.4 mV, and 83.01% respectively. Further to investigate defect states between band levels, admittance, and impedance spectroscopic analysis has been done with an equivalent electrical circuit model obtained from EIS module. Present studies help to identify the carrier accumulation behavior at various least‐lattice mismatched interfaces and in bulk of four‐layer solar device. For this analysis, proposed renewable solar device is simulated for characteristics such as capacitance‐voltage (C‐V), capacitance‐frequency (C‐F), conductance‐voltage (G‐V), and conductance‐frequency (G‐F) under different suitable and practical physical conditions. In this technique, AC signal is applied to the solutions obtained from the semiconductor and continuity equations in SCAPS‐1d. Further, we have done an in‐depth analysis through these measurements.
Solution-processed photodetectors Nitesh K. Chourasia, Bhola N. Pal Chemical Solution Synthesis for Materials Design and Thin Film Device Applications, 2021
Propagation and Interactions of Cos Gaussian Beams in Biased Photovoltaic Lithium Niobate Crystals: An Ab Initio Study A Katti, R Kumar, NK Chourasia, RK Chourasia Advanced Theory and Simulations 9 (5), e70413 , 2026 2026
Nanomaterials in the Automobile Industry: Revolutionizing Vehicle Performance, Safety, and Sustainability Komal, A Rawat, NK Chourasia, M Kumar, RK Chourasia Nanomaterials: Synthesis and Applications, 181-199 , 2026 2026
2T-Si/Sb2S3 tandem solar cell: Impedance spectroscopic and electrical circuit analysis AK Sharma, RK Chourasia, NK Chourasia, K Sangani Journal of Electroanalytical Chemistry, 119895 , 2026 2026
Impedance spectroscopy and equivalent circuit modelling of SrZrS3 chalcogenide perovskite solar cells K Sangani, RK Chourasia, A Pandya, NK Chourasia Solar Energy 303, 114136 , 2026 2026 Citations: 1
Impedance Spectroscopic and Electrical Equivalent Circuit Analysis of Indium Tin Oxide/n‐CdS/p‐Si Heterojunction Solar Cell Using SCAPS‐1d and Impedance Spectroscopic Modules PK Jha, RK Chourasia, A Srivastava, AK Sharma, K Sangani, ... Energy Technology, 2402031 , 2025 2025 Citations: 7
Density functional theory-based design of low-lattice mismatch MoS2/ZnSe and Zn3P2/MoS2 interfaces for enhanced photovoltaic efficiency via SCAPS-1D optimization R Kumar, K Sangani, A Pandya, NK Chourasia, RK Chourasia Inorganic Chemistry Communications 179, 114677 , 2025 2025 Citations: 4
Compact modeling of low-voltage Ti3C2Tx MXene-based TFTs for 1-bit ALU circuit implementation MS Mehrolia, RK Chourasia, A Verma, AK Singh, NK Chourasia Carbon Trends 20, 100546 , 2025 2025
Spatial gap solitons due to photonic lattices in photorefractive SBN crystals: An ab initio investigation A Katti, R Kumar, NK Chourasia, D Umesh, RK Chourasia Materialia 42, 102447 , 2025 2025 Citations: 1
Review of MXene-based nanocomposites for gas sensing A Rawat, NK Chourasia, G Rajput, Sneha, PK Kulriya ACS Applied Nano Materials 8 (17), 8521-8569 , 2025 2025 Citations: 12
Engineering the decay time of Ti 3 C 2 T x MXene by gold nanoparticle decoration G Rajput, A Rawat, NK Chourasia, G Jalendra, G Gupta, A Yadav, ... Nanotechnology 36 (15), 155702 , 2025 2025 Citations: 8
Comprehensive Spectroscopic Investigation of MoS 2 ‐Solar Cells with Exclusive Zn 3 P 2 as HTL Having Least Lattice Mismatches for 32.55% PCE AK Sharma, A Srivastava, PK Jha, K Sangani, NK Chourasia, ... Advanced Theory and Simulations 8 (4), 2401237 , 2025 2025 Citations: 6
Investigation of MoS 2 -hydrogen interaction using in-situ X-ray diffraction studies R Kumar, NK Chourasia, PK Kulriya, M Kumar, V Singh Applied Physics A 131 (1), 14 , 2025 2025 Citations: 5
Parametric optimization for the performance analysis of novel hybrid organo-perovskite solar cell via SCAPS-1D simulation A Srivastava, AK Sharma, PK Jha, M Kumar, NK Chourasia, ... Heliyon 10 (19) , 2024 2024 Citations: 19
Highly Sensitive Ti₃C₂Tx/MoSe₂ (2-D/Quasi-2-D) Heterojunction-Based Photodetector A Rawat, AK Singh, S Kumar, G Rajput, RK Chourasia, NK Chourasia, ... IEEE Sensors Journal 24 (24), 40641-40647 , 2024 2024 Citations: 3
Comparative Performance Analysis of P-Si/n-CdS/ITO Heterojunction Solar Cell by Inserting Cu 2 O as a Back Surface Layer Using SCAPS-1D PK Jha, A Srivastava, N Bihari, AK Sharma, M Kumar, NK Chourasia, ... Advanced Functional Materials for Sustainable Environments, 197-209 , 2024 2024
Performance Improvement in p-Si/n-CdS/ALD-ZnO Heterojunction Solar Cell by Introducing MoSe 2 Ingenious Hole Transport Layer AK Sharma, A Srivastava, PK Jha, M Kumar, NK Chourasia, ... Advanced Functional Materials for Sustainable Environments, 157-170 , 2024 2024
Comparative Performance Analysis of P-Si/n-CdS/ITO Heterojunction Solar Cell by Inserting Cu2O as a Back Surface AK Sharma, M Kumar, NK Chourasia Advanced Functional Materials for Sustainable Environments, 197 , 2024 2024
Signal Components and Impedance Spectroscopy of Potential p-Si/n-CdS/ALD-ZnO Solar Cells: EIS and SCAPS-1D Treatments RKC Atish Kumar Sharma, Ankita Srivastava, Prakash Kumar Jha, Keyur Sangani ... Advaced Theory and Simulations , 2024 2024 Citations: 10
Synergistic electron charge density analysis and phonon calculations for the dynamic stability of metallic SrNbO 3 perovskite material PM Rai, R Kumar, AK Singh, A Srivastava, NK Chourasia, RK Chourasia Interactions 245 (1), 194 , 2024 2024 Citations: 8
A synergy of Cr 2 O 3 with eco‐friendly and thermally stable CsSnCl 3 perovskite for solar energy storage: Density functional theory and SCAPS‐1D analysis A Pandya, AK Sharma, M Bhatt, PK Jha, K Sangani, NK Chourasia, ... Energy Storage 6 (5), e70001 , 2024 2024 Citations: 12
MOST CITED SCHOLAR PUBLICATIONS
Gate Interface Engineering for Subvolt Metal Oxide Transistor Fabrication by Using Ion-Conducting Dielectric with Mn 2 O 3 Gate Interface N Pal, A Sharma, V Acharya, NK Chourasia, S Biring, BN Pal ACS Applied Electronic Materials 2 (1), 25-34 , 2019 2019 Citations: 55
Solution processed Li 5 AlO 4 dielectric for low voltage transistor fabrication and its application in metal oxide/quantum dot heterojunction phototransistors A Sharma, NK Chourasia, A Sugathan, Y Kumar, S Jit, SW Liu, A Pandey, ... Journal of Materials Chemistry C 6 (4), 790-798 , 2018 2018 Citations: 55
Study of Eco-Friendly Organic–Inorganic Heterostructure CH 3 NH 3 SnI 3 Perovskite Solar Cell via SCAPS Simulation: P. K. Jha et al. PK Jha, NK Chourasia, A Srivastava, AK Sharma, R Kumar, S Sharma, ... Journal of Electronic Materials 52 (7), 4321-4329 , 2023 2023 Citations: 43
Solution processed low band gap ion-conducting gate dielectric for low voltage metal oxide transistor NK Chourasia, A Sharma, V Acharya, N Pal, S Biring, BN Pal Journal of Alloys and Compounds 777, 1124-1132 , 2019 2019 Citations: 43
Ultra-Low Voltage Metal Oxide Thin Film Transistor by Low-Temperature Annealed Solution Processed LiAlO 2 Gate Dielectric A Sharma, NK Chourasia, V Acharya, N Pal, S Biring, SW Liu, BN Pal Electronic Materials Letters 16 (1), 22-34 , 2020 2020 Citations: 42
Characteristic Features and Performance Investigations of a PTB7: PC71BM/PFN: Br Pure Organic Solar Cell Using SCAPS-1D: AK Sharma et al. AK Sharma, NK Chourasia, PK Jha, R Kumar, M Kumar, RK Chourasia Journal of Electronic Materials 52 (7), 4302-4311 , 2023 2023 Citations: 38
Role of Electron Donation of TiO 2 Gate Interface for Developing Solution-Processed High-Performance One-Volt Metal-Oxide Thin-Film Transistor Using Ion … A Sharma, NK Chourasia, N Pal, S Biring, BN Pal The Journal of Physical Chemistry C 123 (33), 20278-20286 , 2019 2019 Citations: 34
Investigation of charge carrier dynamics in a Ti 3 C 2 T x MXene for ultrafast photonics applications A Rawat, NK Chourasia, SK Saini, G Rajput, A Yadav, RK Chourasia, ... Materials Advances 4 (23), 6427-6438 , 2023 2023 Citations: 31
Unveiling the potential of Ti 3 C 2 T x MXene for gas sensing: recent developments and future perspectives NK Chourasia, A Rawat, RK Chourasia, H Singh, RK Kulriya, V Singh, ... Materials Advances 4 (23), 5948-5973 , 2023 2023 Citations: 28
Functional Dielectric Properties of Solution-Processed Lithium Indium Tin Oxide (LiInSnO₄) and Its Application as a Gate Insulator of a Low Voltage Thin Film Transistor U Pandey, NK Chourasia, N Pal, S Biring, BN Pal IEEE Transactions on Electron Devices 69 (3), 1077-1082 , 2022 2022 Citations: 28
Analysis of Bragg fiber waveguides having a defect layer for biosensing application RK Chourasia, CS Yadav, A Upadhyay, NK Chourasia, V Singh Optik 200, 163400 , 2020 2020 Citations: 28
Low Operating Voltage Solution Processed (Li₂ZnO₂) Dielectric and (SnO₂) Channel-Based Medium Wave UV-B Phototransistor for Application in Phototherapy AK Singh, NK Chourasia, BN Pal, A Pandey, P Chakrabarti IEEE Transactions on Electron Devices 67 (5), 2028-2034 , 2020 2020 Citations: 24
Bulk parameters effect and comparative performance analysis of p-Si/n-CdS/ALD-ZnO solar cell AK Sharma, R Kumar, PK Jha, M Kumar, NK Chourasia, RK Chourasia Silicon 15 (15), 6497-6508 , 2023 2023 Citations: 20
Parametric optimization for the performance analysis of novel hybrid organo-perovskite solar cell via SCAPS-1D simulation A Srivastava, AK Sharma, PK Jha, M Kumar, NK Chourasia, ... Heliyon 10 (19) , 2024 2024 Citations: 19
Optimization of electrical properties for performance analysis of p-Si/n-CdS/ITO heterojunction photovoltaic cell PK Jha, NK Chourasia, AK Sharma, RK Chourasia Materials Today: Proceedings 67, 620-624 , 2022 2022 Citations: 17
A Lithography-Free Fabrication of Low-Operating Voltage-Driven, Very Large Channel Length Graphene Field-Effect Transistor With NH 3 Sensing Application NK Chourasia, AK Singh, S Rai, A Sharma, P Chakrabarti, A Srivastava, ... IEEE Transactions on Electron Devices 67 (10), 4385-4391 , 2020 2020 Citations: 17
Comparative study of defect mode intensity and wavelength modulation in Bragg fiber wave guide sensors VS Ritesh Kumar Chourasia, Chandan Singh Yadav, Abhishek Upadhyay, Nitesh K ... Optik 204 , 2020 2020 Citations: 16
Bulk/Interface Defects Engineering and Comparative Performance Analysis of p‐Si/n‐CdS/ALD‐ZnO Heterojunction Solar Cell AK Sharma, A Srivastava, PK Jha, R Kumar, M Kumar, PK Kulriya, ... Energy Technology , 2023 2023 Citations: 14
Optimizing temperature-dependent molar volume fraction of biodiesel fuel in a pseudo-binary mixture through Bragg fiber waveguide sensor having defect layer NK Chourasia, A Srivastava, V Kumar, RK Chourasia Fuel 293, 120489 , 2021 2021 Citations: 14
Doubly electrically tuned cylindrical Bragg fiber waveguide inline optical filter for multiwavelength LASER applications NK Chourasia, A Srivastava, V Kumar, RK Chourasia Materials Today Communications 25, 101620 , 2020 2020 Citations: 14