Publications

Carrier Dynamics and Structural Analyses of Orange/Red In-Rich InGaN Double-Quantum Wells LED Hybridized by Blue InGaN Single-Quantum Well

Year: 2025

Authors: Hadeel A. Alamoudi, Nuaman M. Kutty, Fatimah Alreshidi, Daisuke Iida, Georgian Melinte, Kishor Upadhyaya, Mohammed Najmi, Kazuhiro Ohkawa, Iman S. Roqan

Carrier Dynamics and Structural Analyses of Orange/Red In-Rich InGaN Double-Quantum Wells LED Hybridized by Blue InGaN Single-Quantum Well

Investigation of ultrathin surface passivation layers for GaN: A comparative analysis of Al2O3, SiO2, and SiNx in reducing surface recombination

Year: 2025

Authors: Haris Naeem Abbasi, Hadeel A Alamoudi, Tien Khee Ng, Vijay Kumar Gudelli, Ranveer Singh, Jiarui Gong, Jie Zhou, Yi Lu, Yang Liu, Dong Liu, Shuoyang Qiu, Boon S Ooi, Iman Roqan, Zhenqiang Ma

Investigation of ultrathin surface passivation layers for GaN: A comparative analysis of Al2O3, SiO2, and SiNx in reducing surface recombination

Uniform blue emitting carbon nanodots synthesized from fig fruit using reverse diffusion purification

Year: 2024

Authors: Jamaan E Alassafi, Yas Al-Hadeethi, Mohammed S Aida, Iman S Roqan, Samar F Al-Shehri, Mohammad S Ansari, Samer Alamodi, Mingguang Chen

Uniform blue emitting carbon nanodots synthesized from fig fruit using reverse diffusion purification

Enhancement the performance of MAPbI3 Perovskite Solar Cells via Germanium Sulfide Doping

Year: 2024

Authors: EM Mkawi, Saif MH Qaid, IS Roqan, Y Al-Hadeethi, FG ALmehmadi, Hadeel A Alamoudi, Fatimah Alreshidi, Sanad A Alsulaiman,, Hassan I Jaafari, Yahya Alajlani, Ahmad Umar, E Bekyarova, Abdullah S Aldwayyan

Enhancement the performance of MAPbI3 Perovskite Solar Cells via Germanium Sulfide Doping

Ultraviolet spin based system and method

Year: 2024

Authors: Hadeel Alamoudi, Iman S Roqan

Ultraviolet spin based system and method

Identifying orientation-dependent optical properties of single-crystalline β-Ga2O3 films

Year: 2024 DOI:https://doi.org/10.1063/5.0212388

Authors: Kishor Upadhyaya ; Vijay Kumar Gudelli ; Wojciech Ogieglo, Hadeel Alamoudi; Fatimah Alreshidi ; Iman S. Roqan

Identifying orientation-dependent optical properties of single-crystalline β-Ga2O3 films

Enhanced Electronic Structure, Phase, and Morphology of a CH3NH3PbI3 Perovskite Solar Cell Using Vanadium Copper Sulfide (VCuS) Nanoparticle Treatment

Year: 2024

Authors: EM Mkawi, FG ALmehmadi, Y Al-Hadeethi, MKM Ali,, IS Roqan, Hadeel A Alamoudi, Fatimah Alreshidi,, Saleh N Alamri, Ahmad Umar, E Bekyarova

Enhanced Electronic Structure, Phase, and Morphology of a CH3NH3PbI3 Perovskite Solar Cell Using Vanadium Copper Sulfide (VCuS) Nanoparticle Treatment

Micro-pump fluidic strategy for fabricating perovskite microwire array-based devices on semiconductor platforms and method

Year: 2024

Authors: Bin XIN ,Iman S. Roqan

Micro-pump fluidic strategy for fabricating perovskite microwire array-based devices on semiconductor platforms and method

Enhancing Electronic and Magnetic Properties in Eu-Doped GaN Nanowires via p-f Hybridization of Eu-Defect Complexes

Enhancing Electronic and Magnetic Properties in Eu-Doped GaN Nanowires via p-f Hybridization of Eu-Defect Complexes Year: 2024 DOI:https://doi.org/10.1002/adts.202400277

Authors: Vijay Kumar Gudelli, Assa Aravindh S, Iman S. Roqan

Enhanced Efficiency InGaN/GaN Multiple Quantum Well Structures via Strain Engineering and Ultrathin Subwells Formed by V-Pit Sidewalls

Year: 2024

Authors: Fatimah Alreshidi, Lih-Ren Chen, Mohammed Najmi,, Bin Xin, Hadeel Alamoudi, Georgian Melinte,, Nimer Wehbe, Daisuke Iida, Kazuhiro Ohkawa,, Tien-Chang Lu, Iman S Roqan

Enhanced Efficiency InGaN/GaN Multiple Quantum Well Structures via Strain Engineering and Ultrathin Subwells Formed by V-Pit Sidewalls

Simultaneous Growth Strategy of High-Optical-Efficiency GaN NWs on a Wide Range of Substrates by Pulsed Laser Deposition

Year: 2023

Authors: Dhaifallah Almalawi, Sergei Lopatin, Paul R Edwards,, Bin Xin, Ram C Subedi, Mohammed A Najmi,, Fatimah Alreshidi, Alessandro Genovese, Daisuke Iida,, Nimer Wehbe, Boon S Ooi, Kazuhiro Ohkawa,, Robert W Martin, Iman S Roqan

Simultaneous Growth Strategy of High-Optical-Efficiency GaN NWs on a Wide Range of Substrates by Pulsed Laser Deposition

Methods and apparatuses for fabricating perovskite-based devices on cost-effective flexible conductive substrates

Year: 2023

Authors: Iman Salem ROQANNorah Mohammed ALWADAISomak Mitra

fabricating perovskite-based devices on cost-effective flexible conductive substrates

Strain-Engineering of Electronic and Magnetic Properties of Chemically Passivated Zigzag GaN Nanoribbons: An Ab Initio Study

Year: 2023

Authors: Vijay Kumar Gudelli, Naresh Alaal, Iman S Roqan

nanoribbons III-nitrides two-dimensional monolayers chemical functionalization strain-induced phase transition magnetism semiconductors

Novel P-type wide bandgap manganese oxide quantum dots for self-powered solar-blind deep UV devices

Year: 2023

Authors: Iman S Roqan, Somak Mitra, Norah Alwadai, Hadeel Alamoudi, Zohoor Alharbi, Fatimah Alreshidi, Bin Xin, Yusin Pak

Novel P-type wide bandgap manganese oxide quantum dots for self-powered solar-blind deep UV devices

Enhanced Photoresponsivity UV-C Photodetectors Using a p–n Junction Based on Ultra-Wide-Band Gap Sn-Doped β-Ga2O3 Microflake/MnO Quantum Dots

Year: 2023 DOI:https://pubs.acs.org/doi/10.1021/acsami.2c18900

Authors: Norah Alwadai, Zohoor Alharbi, Fatimah Alreshidi, Somak Mitra, Bin Xin, Hadeel Alamoudi, Kishor Upadhyaya, Mohamed N Hedhili, Iman S Roqan

Enhanced Photoresponsivity UV-C Photodetectors Using a p–n Junction Based on Ultra-Wide-Band Gap Sn-Doped β-Ga2O3 Microflake/MnO Quantum Dots

Invitro evaluation of new treatment for dentin hypersensitivity using BioMin F and BioMin C

Year: 2023 DOI:https://doi.org/10.1016/j.jnoncrysol.2022.122072

Authors: Ahmed Samir Bakry, Nuha Al-Harbi, Yas Al-Hadeethi, Mona A Abbassy, NK Katturi, Bin Xin, IS Roqan, Hiba Mohammed, Robert Hill

Invitro evaluation of new treatment for dentin hypersensitivity using BioMin F and BioMin C

Phonon-limited mobility and quantum transport in fluorinated diamane MOSFETs from the first-principles calculations

Year: 2023 DOI:https://doi.org/10.1016/j.carbon.2022.12.064

Authors: Linpeng Dong, Penghui Li, Chong Li, Iman S Roqan, Bo Peng, Bin Xin, Weiguo Liu

Phonon-limited mobility and quantum transport in fluorinated diamane MOSFETs from the first-principles calculations

Growth modification via indium surfactant for InGaN/GaN green LED

Year: 2023 DOI:10.1088/1361-6641/acb2eb

Authors: Muhamad Ikram Md Taib, Mohd Anas Ahmad, Ezzah Azimah Alias, Abdullah Ibrahim Alhassan,, Idris Ajia, Mufasila Mumthaz Muhammed, Iman Roqan, Steven P DenBaars,, James Speck, Shuji Nakamura, Norzaini Zainal

Growth modification via indium surfactant for InGaN/GaN green LED

Indirect bandgap, perovskite-based x-ray detector and method

Year: 2022

Authors: XIN Bin, Iman S Roqan

Indirect bandgap, perovskite-based x-ray detector and method

Spin-sensitive ultraviolet light-based device and method

Year: 2022

Authors: Iman Salem Roqan

Spin-sensitive

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