Dr. Hemant J. Ghadi Profile

Dr. Hemant J. Ghadi

SPIE Involvement:

Author

Publications (36)

Proceedings Article | 5 March 2021 Presentation + Paper

Detailed investigation of MOCVD-grown [beta]-Ga2O3 through quantitative defect spectroscopies

Hemant Ghadi, Joe McGlone, Zixuan Feng, A.F.M. Anhar Uddin Bhuiyan, Yuxuan Zhang, Hongping Zhao, Andrew Armstrong, George Burns, Gyorgy Vizkelethy, Ed Bielejec, Aaron Arehart, Steven Ringel

Proceedings Volume 11687, 116870T (2021) https://doi.org/10.1117/12.2589947

Read Abstract +

Proceedings Article | 21 August 2020 Poster + Presentation + Paper

Effect of UV-Ozone annealing on the transient characteristics of ZnMgO thin film UV-Vis photodetector

Md Jawaid Alam, Madhuri Mishra, Punam Murkute, Sushama Sushama, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 11465, 114651G (2020) https://doi.org/10.1117/12.2569020

KEYWORDS: Photodetectors, Annealing, Oxygen, Thin films, Sensors, Ultraviolet radiation, Switching, Silicon

Read Abstract +

Proceedings Article | 5 March 2020 Paper

Impact of UV-ozone annealing on the optical and structural properties of ZnO thin films and nanorods

Md Jawaid Alam, Punam Murkute, Sushama Sushama, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 11281, 112812A (2020) https://doi.org/10.1117/12.2547281

KEYWORDS: Zinc oxide, Annealing, Nanorods, Thin films, Oxygen, Scanning electron microscopy, X-ray diffraction, Zinc, Optical properties, Luminescence

Read Abstract +

Proceedings Article | 5 March 2020 Paper

A comparative study on the effect of UV-ozone annealing on the optical properties of ZnMgO thin films and nanorods

Md Jawaid Alam, Punam Murkute, Sushama Sushama, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 11281, 1128129 (2020) https://doi.org/10.1117/12.2547272

KEYWORDS: Nanorods, Annealing, Thin films, Oxygen, Zinc, Optical properties, Scanning electron microscopy, Luminescence, Magnesium, Zinc oxide

Read Abstract +

Proceedings Article | 3 September 2019 Paper

Time dependent boron implantation effect on the dopant solubility and optical properties of phosphorus doped ZnO thin films

Sushama Sushama, Punam Murkute, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 11089, 1108926 (2019) https://doi.org/10.1117/12.2530090

KEYWORDS: Phosphorus, Boron, Zinc oxide, Thin films, Optical properties, Zinc, Ion implantation, Oxygen, Annealing, Doping

Read Abstract +

Proceedings Article | 4 March 2019 Presentation + Paper

Influence of modulation doping on p-i-p quantum-dots (InAs/GaAs)-based infrared detector performance

Vidya Deviprasad, Hemant Ghadi, Debabrata Das, Debiprasad Panda, Vinayak Chavan, Pravin Raut, Abhijeet Aanand, Subhananda Chakrabarti

Proceedings Volume 10929, 109290K (2019) https://doi.org/10.1117/12.2508533

KEYWORDS: Modulation, Quantum dots, Indium arsenide, Doping, Infrared radiation, Gallium arsenide, Infrared detectors, Luminescence, Photodetectors

Read Abstract +

Proceedings Article | 4 March 2019 Paper

Impact of ultra-thin quaternary capping on modulation doped p-i-p quantum dots (InAs/GaAs) based infrared detector

Vidya Deviprasad, Hemant Ghadi, Debabrata Das, Debiprasad Panda, Subhananda Chakrabarti

Proceedings Volume 10929, 1092911 (2019) https://doi.org/10.1117/12.2508615

KEYWORDS: Gallium arsenide, Modulation, Quantum dots, Infrared detectors, Short wave infrared radiation, Infrared radiation, Mid-IR, Aluminum, Luminescence

Read Abstract +

Proceedings Article | 4 March 2019 Presentation + Paper

Improvement in operating temperature of InAs/GaAs quantum-dots-based photodetectors by varying position of localized carriers in active region

Vidya Deviprasad, Hemant Ghadi, Debabrata Das, Debiprasad Panda, Vinayak Chavan, Pravin Raut, Abhijeet Aanand, Subhananda Chakrabarti

Proceedings Volume 10929, 109290G (2019) https://doi.org/10.1117/12.2508643

KEYWORDS: Modulation, Doping, Gallium arsenide, Quantum dots, Indium arsenide, Photodetectors, Infrared radiation, Heterojunctions, Luminescence

Read Abstract +

Proceedings Article | 4 March 2019 Paper

Impact of ternary capping on p-i-p InAs/GaAs quantum-dot infrared photodetectors

Vidya Deviprasad, Hemant Ghadi, Debabrata Das, Debiprasad Panda, Subhananda Chakrabarti

Proceedings Volume 10929, 1092912 (2019) https://doi.org/10.1117/12.2508669

KEYWORDS: Gallium arsenide, Indium gallium arsenide, Infrared radiation, Quantum dots, Infrared photography, Photodetectors, Short wave infrared radiation, Luminescence

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Augmenting optical and structural properties in Zn0.85Mg0.15O thin film with P-B co-doping

Sushama Sushama, Punam Murkute, Hemant Ghadi, Vinayak Chavan, Subhananda Chakrabarti

Proceedings Volume 10919, 109192I (2019) https://doi.org/10.1117/12.2508716

KEYWORDS: Zinc, Magnesium, Phosphorus, Boron, Thin films, Zinc oxide, Oxygen, Doping, Plasma, Ion implantation

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Enhanced optical properties with the assimilation of boron and phosphorus dopant in co-doped ZnO thin film

Sushama Sushama, Punam Murkute, Hemant Ghadi, Vinayak Chavan, Subhananda Chakrabarti

Proceedings Volume 10919, 109192H (2019) https://doi.org/10.1117/12.2508688

KEYWORDS: Phosphorus, Zinc oxide, Boron, Thin films, Zinc, Oxygen, Raman spectroscopy, Chemical species, Optical properties, Crystals

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Improvement in performance characteristics of Zn(1-x)MgxO (x=15%) thin film transistor (TFT) with UV-ozone treatment

Md Jawaid Alam, Punam Murkute, Hemant Ghadi, Sushama Sushama, Subhananda Chakrabarti

Proceedings Volume 10919, 109192N (2019) https://doi.org/10.1117/12.2509749

KEYWORDS: Thin films, Interfaces, Transistors, Annealing, Oxides, Oxygen, Zinc, Capacitance, Thin film deposition, Titanium

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Interdependence of Ar and O2 partial pressure on the properties of RF sputtered Zn0.85Mg0.15O thin film

Punam Murkute, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 10919, 109192J (2019) https://doi.org/10.1117/12.2509416

KEYWORDS: Zinc, Oxygen, Magnesium, Thin films, Zinc oxide, Argon, Chemical species, Sputter deposition, Ions, X-rays

Read Abstract +

Proceedings Article | 1 March 2019 Presentation + Paper

Enhancement in optical properties of ZnO nanorods by UV ozone treatment

Md Jawaid Alam, Punam Murkute, Hemant Ghadi, Sushama Sushama, Subhananda Chakrabarti

Proceedings Volume 10919, 109191P (2019) https://doi.org/10.1117/12.2509721

KEYWORDS: Zinc oxide, Nanorods, Oxygen, Ozone, Luminescence, Annealing, Ultraviolet radiation, Zinc, Scanning electron microscopy, Optical properties

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Investigating time-varying phosphorous doping effect on the structural and optical properties of ZnO thin films

Sushama Sushama, Punam Murkute, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 10919, 109192F (2019) https://doi.org/10.1117/12.2508435

KEYWORDS: Phosphorus, Zinc oxide, Thin films, Annealing, Doping, Excitons, Plasma, Zinc, Temperature metrology, Optical properties

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Enhancement of photocurrent and responsivity of Zn1-xMgxO (x=15%)-based ultraviolet detector by UV-ozone treatment

Md Jawaid Alam, Punam Murkute, Hemant Ghadi, Sushama Sushama, Shyam Murli Manohar Dhar Dwivedi, Anupam Ghosh, Chiranjib Ghosh, Aniruddha Mondal, Subhananda Chakrabarti

Proceedings Volume 10919, 109192L (2019) https://doi.org/10.1117/12.2509509

KEYWORDS: Photodetectors, Sensors, Ultraviolet radiation, Thin films, Silicon, Ultraviolet detectors, Switching, Visible radiation, Oxygen, Annealing

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Enhancement in optical properties with suppression of defect states by UV-ozone processing in RF sputtered Zn(1-x)MgxO (x=15%) thin film

Md Jawaid Alam, Punam Murkute, Hemant Ghadi, Sushama Sushama, Subhananda Chakrabarti

Proceedings Volume 10919, 109192M (2019) https://doi.org/10.1117/12.2509673

KEYWORDS: Annealing, Oxygen, Thin films, Zinc oxide, Atomic force microscopy, Ultraviolet radiation, Magnesium, X-ray diffraction, Optical properties, Zinc

Read Abstract +

Proceedings Article | 14 May 2018 Paper

Short wave infrared photodetector using p-i-p quantum dots (InAs/GaAs) for high temperature operation

Vidya Deviprasad, Hemant Ghadi, Debabrata Das, Debiprasad Panda, Harshal Rawool, Subhananda Chakrabarti

Proceedings Volume 10624, 106241Q (2018) https://doi.org/10.1117/12.2305289

KEYWORDS: Quantum dots, Short wave infrared radiation, Infrared radiation, Infrared photography, Photodetectors, Infrared technology, Gallium arsenide, Indium arsenide, Infrared detectors, Light scattering

Read Abstract +

Proceedings Article | 14 May 2018 Paper

Modelling of dark current and noise dependence on capping thickness in quantum dots based infrared photodetectors

Vidya Deviprasad, Hemant Ghadi, Swetapadma Sahoo, Subhananda Chakrabarti

Proceedings Volume 10624, 106241R (2018) https://doi.org/10.1117/12.2305293

KEYWORDS: Gallium arsenide, Quantum dots, Modeling, Infrared photography, Photodetectors, Indium arsenide, Heterojunctions

Read Abstract +

Proceedings Article | 1 March 2018 Paper

Temperature-dependent phosphorous dopant activation in ZnO thin film deposited using plasma immersion ion implantation

Punam Murkute, Hemant Ghadi, Shantanu Saha, Vinayak Chavan, Subhananda Chakrabarti

Proceedings Volume 10533, 105332K (2018) https://doi.org/10.1117/12.2288944

KEYWORDS: Zinc oxide, Annealing, Temperature metrology, Zinc, Thin films, Phosphorus, Scanning electron microscopy, Ion implantation, Raman spectroscopy, Plasma

Read Abstract +

Proceedings Article | 1 March 2018 Paper

Effect of time varying phosphorus implantation on optoelectronics properties of RF sputtered ZnO thin-films

Punam Murkute, Hemant Ghadi, Shantanu Saha, Vinayak Chavan, Subhananda Chakrabarti

Proceedings Volume 10533, 105332L (2018) https://doi.org/10.1117/12.2288958

KEYWORDS: Zinc oxide, Phosphorus, Thin films, Zinc, Ions, Oxygen, Ion implantation, Excitons, Plasma, Annealing

Read Abstract +

Proceedings Article | 21 February 2018 Paper

Highly efficient InAs/InGaAs quantum dot-in-a-well heterostructure validated with theoretically simulated model

H. Ghadi, S. Dubey, P. K. Singh, M. Bhatt, S. Chakrabarti

Proceedings Volume 10543, 105430S (2018) https://doi.org/10.1117/12.2289486

KEYWORDS: Indium gallium arsenide, Gallium arsenide, Quantum dots, Quantum efficiency, Heterojunctions, Indium arsenide, Luminescence, Quantum wells, Optoelectronics, Statistical modeling

Read Abstract +

Proceedings Article | 21 February 2018 Paper

Co-relation of theoretical simulation with experimental results for InAs quantum-dot heterostructures with different capping material

H. Ghadi, P. Singh, S. Dubey, M. Bhatt, S. Chakrabarti

Proceedings Volume 10543, 105430R (2018) https://doi.org/10.1117/12.2289465

KEYWORDS: Indium arsenide, Quantum dots, Gallium arsenide, Heterojunctions, Luminescence, Indium gallium arsenide, Statistical modeling, Sensors, Diffusion, Long wavelength infrared

Read Abstract +

Proceedings Article | 24 February 2017 Paper

Enhancement of photoluminescence in RF sputtered ZnMgO thin films by optimizing annealing temperature

P. Murkute, H. Ghadi, S. Saha, S. Chakrabarti

Proceedings Volume 10105, 1010524 (2017) https://doi.org/10.1117/12.2252015

KEYWORDS: Thin films, Annealing, Luminescence, Sputter deposition, Thin film growth, Zinc, Magnesium, Excitons, Zinc oxide

Read Abstract +

Proceedings Article | 24 February 2017 Paper

Improvement in grain size and crystallinity of sputtered ZnO thin film with optimized annealing ambient

P. Murkute, S. Saha, H. Ghadi, S. Chakrabarti

Proceedings Volume 10105, 1010521 (2017) https://doi.org/10.1117/12.2251448

KEYWORDS: Argon, Atomic force microscopy, Sputter deposition

Read Abstract +

Proceedings Article | 17 September 2016 Paper

Enhancement in device performance of hepta-layer coupled InGaAs quantum dot infrared detector by AuGe surface plasmons

Sushil Kumar Pandey, Lavi Tyagi, Hemant Ghadi, Harshal Rawool, Subhananda Chakrabarti

Proceedings Volume 9921, 99212P (2016) https://doi.org/10.1117/12.2237551

KEYWORDS: Nanoparticles, Indium gallium arsenide, Infrared detectors, Surface plasmons, Sensors, Plasmonics, Infrared sensors, Gallium arsenide, Quantum dots, Annealing

Read Abstract +

Proceedings Article | 15 September 2016 Paper

A detailed investigation of the impact of varying number of dot layers in strain-coupled multistacked InAs/GaAs quantum dot heterostructures

Debiprasad Panda, Akshay Balgarkashi, Saikalash Shetty, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 9927, 99271J (2016) https://doi.org/10.1117/12.2238607

KEYWORDS: Indium arsenide, Heterojunctions, Luminescence, Optical properties, Gallium arsenide, Quantum dots, Photodetectors, Electrical engineering, Solar cells, Infrared photography

Read Abstract +

Proceedings Article | 15 September 2016 Paper

Growth technique and effect of post growth annealing on the optical properties of In(Ga)As/GaAs quantum dot heterostructures

Debiprasad Panda, Aijaz Ahmad, Sourav Adhikary, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 9927, 99271I (2016) https://doi.org/10.1117/12.2238605

KEYWORDS: Annealing, Heterojunctions, Optical properties, Luminescence, Quantum dots, Indium arsenide, Argon, Gallium arsenide, Infrared radiation, Electrical engineering

Read Abstract +

Proceedings Article | 15 March 2016 Paper

Effect of varying capping composition and number of strain-coupled stacks on In0.5Ga0.5As quantum dot infrared photodetectors

Debiprasad Panda, Saikalash Shetty, Akshay Balgarkashi, Hemant Ghadi, Navneet Sehara, Subhananda Chakrabarti

Proceedings Volume 9758, 97580Q (2016) https://doi.org/10.1117/12.2209308

KEYWORDS: Quantum dots, Gallium arsenide, Infrared radiation, Quantum well infrared photodetectors, Infrared photography, Photodetectors, Molecular beam epitaxy, Luminescence, Solids, Mid-IR, Indium, Gallium, Heterojunctions

Read Abstract +

Proceedings Article | 27 February 2016 Paper

Enhancement in optical and structural properties of Zn0.85Mg0.15O nanorods over thin films synthesized by hydrothermal chemical treatment

P. Murkute, N. Sehara, H. Ghadi, S. Pandey, S. Maity, S. Chakrabarti

Proceedings Volume 9749, 974920 (2016) https://doi.org/10.1117/12.2209295

KEYWORDS: Nanorods, Thin films, Luminescence, Scanning electron microscopy, Optical properties, Thin film deposition, Oxygen, Light scattering, Sputter deposition, Crystals, Silicon, Zinc oxide, Zinc, Magnesium, Annealing, Reflectivity

Read Abstract +

Proceedings Article | 13 May 2015 Paper

A detail investigation on quaternary and ternary capped strain coupled quantum dots based infrared photodetectors and effect of rapid thermal annealing temperature

H. Ghadi, S. Adhikary, S. Shetty, A. Balgarkashi, S. Chakrabarti

Proceedings Volume 9481, 94810U (2015) https://doi.org/10.1117/12.2180908

KEYWORDS: Annealing, Thermal effects, Gallium arsenide, Quantum dots, Heterojunctions, Quantum well infrared photodetectors, Infrared photography, Infrared radiation, Photodetectors, Lithography

Read Abstract +

Proceedings Article | 13 May 2015 Paper

Effect of high energy proton implantation on the device characteristics of InAlGaAs-capped InGaAs/GaAs quantum dot based infrared photodetectors

S. Upadhyay, A. Mandal, H. Ghadi, D. Pal, N. B. Subrahmanyam, P. Singh, S. Chakrabarti

Proceedings Volume 9481, 94810T (2015) https://doi.org/10.1117/12.2181564

KEYWORDS: Infrared radiation, Gallium arsenide, Quantum dots, Photodetectors, Quantum well infrared photodetectors, Infrared photography, Long wavelength infrared, Ions, Luminescence, Chemical species

Read Abstract +

Proceedings Article | 27 February 2015 Paper

Stability in peak emission wavelength in strain-coupled multilayer InAs/GaAs quantum dot heterostructures when subjected to high-temperature rapid thermal annealing

Saikalash Shetty, Sourav Adhikary, Hemant Ghadi, Subhananda Chakrabarti

Proceedings Volume 9373, 93730I (2015) https://doi.org/10.1117/12.2074088

KEYWORDS: Annealing, Indium gallium arsenide, Heterojunctions, Gallium arsenide, Quantum dots, Solar cells, Quantum dot lasers, Cladding, Luminescence, Argon

Read Abstract +

Proceedings Article | 27 February 2015 Paper

Cross-sectional TEM (XTEM) analysis for vertically-coupled quaternary In0.21Al0.21Ga0.58As capped InAs/GaAs quantum dot infrared photodetectors

Binita Tongbram, Hemant Ghadi, Sourav Adhikary, Arjun Mandal, Subhananda Chakrabarti

Proceedings Volume 9373, 93730S (2015) https://doi.org/10.1117/12.2074835

KEYWORDS: Gallium arsenide, Transmission electron microscopy, Quantum dots, Heterojunctions, Infrared photography, Infrared radiation, Photodetectors, Indium arsenide, Quantum well infrared photodetectors, Optical properties

Read Abstract +

Proceedings Article | 18 June 2013 Paper

Reduction of dark current density by five orders at high bias and enhanced multicolour photo response at low bias for quaternary alloy capped InGaAs/ GaAs QDIPs, when implanted with low-energy light (H-) ions

Arjun Mandal, H. Ghadi, Goma Kumari K. C., A. Basu, N. B. V. Subrahmanyam, P. Singh, S. Chakrabarti

Proceedings Volume 8704, 870435 (2013) https://doi.org/10.1117/12.2016299

KEYWORDS: Gallium arsenide, Ions, Indium, Quantum well infrared photodetectors, Infrared radiation, Long wavelength infrared, Chemical species, Infrared photography, Photodetectors, Mid-IR

Read Abstract +

Proceedings Article | 29 March 2013 Paper

Influence of low energy H- ion implantation on the electrical and material properties of quaternary alloy (In0.21Al0.21Ga0.58As) capped InAs/GaAs n-i-n QDIPs

A. Mandal, H. Ghadi, K. Mathur, A. Basu, N. B. V. Subrahmanyam, P. Singh, S. Chakrabarti

Proceedings Volume 8634, 86340A (2013) https://doi.org/10.1117/12.2001805

KEYWORDS: Ions, Gallium arsenide, Ion implantation, Quantum dots, Infrared radiation, Quantum well infrared photodetectors, Infrared photography, Photodetectors, Heterojunctions, Infrared detectors

Read Abstract +

Showing 5 of 36 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years