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Semiconductor and Material Spectroscopy Laboratory
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Publications

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Ultraviolet-to-blue color-converting scintillating-fibers photoreceiver for 375-nm laser-based underwater wireless optical communication
Year: 2019 DOI:https://doi.org/10.1364/OE.27.030450
Authors: Chun Hong Kang, Abderrahmen Trichili, Omar Alkhazragi, Huafan Zhang, Ram Chandra Subedi, Yujian Guo, Somak Mitra, Chao Shen, Iman S Roqan, Tien Khee Ng, Mohamed-Slim Alouini, Boon S Ooi
  • Ultraviolet-to-blue color-converting scintillating-fibers photoreceiver for 375-nm laser-based underwater wireless optical communication
Novel P‐Type Wide Bandgap Manganese Oxide Quantum Dots Operating at Deep UV Range for Optoelectronic Devices
Year: 2019
Authors: Somak Mitra, Yusin Pak, Naresh Alaal, Mohamed N Hedhili, Dhaifallah R Almalawi, Norah Alwadai, Kalaivanan Loganathan, Yogeenath Kumarasan, Namsoo Lim, Gun Y Jung, Iman S Roqan
  • Novel P‐Type Wide Bandgap Manganese Oxide Quantum Dots Operating at Deep UV Range for Optoelectronic Devices
Unambiguously enhanced ultraviolet luminescence of AlGaN wavy quantum well structures grown on large misoriented sapphire substrate
Year: 2019
Authors: Haiding Sun, Somak Mitra, Ram Chandra Subedi, Yi Zhang, Wei Guo, Jichun Ye, Mohammad Khaled Shakfa, Tien Khee Ng, Boon S Ooi, Iman S Roqan, Zihui Zhang, Jiangnan Dai, Changqing Chen, Shibing Long
  • Unambiguously Enhanced Ultraviolet Luminescence of AlGaN Wavy Quantum Well Structures Grown on Large Misoriented Sapphire Substrate
Structural, magnetic and electronic properties of two dimensional NdN: an ab initio study
Year: 2019 DOI:10.1039/c9ra07429e
Authors: Assa Aravindh Sasikala Devi, Iman S Roqan
  • Structural, magnetic and electronic properties of two dimensional NdN: an ab initio study
Optimized performance III-nitride-perovskite-based heterojunction photodetector via asymmetric electrode configuration
Year: 2020 DOI:10.1039/C9RA08823G
Authors: Somak Mitra, Mufasila Mumthaz Muhammed, Norah Alwadai, Dhaifallah R Almalawi, Bin Xin, Yusin Pak, Iman S Roqan
  • Optimized performance III-nitride-perovskite-based heterojunction photodetector via asymmetric electrode configuration
Meso-Zn (II) porphyrins of Tailored Functional Groups for Intensifying the Photoacoustic Signal
Year: 2020 DOI:10.1039/D0TC00369G
Authors: Amina Yasin, Vijayakumar S Nair, S Assa Aravindh, Shaheen M Sarkar, Maryam Hatamimoslehabadi, Somak Mitra, Mohd Hasbi Ab Rahim, Jeffrey La, Iman Roqan, Mashitah M Yusoff, Chandra S Yelleswarapu, Rajan Jose
  • Meso-Zn (II) porphyrins of Tailored Functional Groups for Intensifying the Photoacoustic Signal
Time–Energy Quantum Uncertainty: Quantifying the Effectiveness of Surface Defect Passivation Protocols for Low-Dimensional Semiconductors
Year: 2020 DOI:https://pubs.acs.org/doi/abs/10.1021/acsaelm.9b00578
Authors: Nasir Alfaraj, Wael Alghamdi, Meshal Alawein, Idris A Ajia, Davide Priante, Bilal Janjua, Haiding Sun, Tien Khee Ng, Boon S Ooi, Iman S Roqan, Xiaohang Li
  • Time–Energy Quantum Uncertainty: Quantifying the Effectiveness of Surface Defect Passivation Protocols for Low-Dimensional Semiconductors
Modulating Electronic Structures of Armchair GaN Nanoribbons by Chemical Functionalization under an Electric Field Effect
Year: 2020 DOI:https://pubs.acs.org/doi/abs/10.1021/acsomega.9b03841
Authors: Naresh Alaal, Iman S Roqan
  • Modulating Electronic Structures of Armchair GaN Nanoribbons by Chemical Functionalization under an Electric Field Effect
Density Functional Theory Studies of Zn12O12 Clusters Doped with Mg/Eu and Defect Complexes
Year: 2020 DOI:https://doi.org/10.1007/s10876-020-01758-y(0123456789().,-volV) (0123456789().,-volV)
Authors: SA Aravindh, IS Roqan, H Alawadhi
  • Density functional theory ZnO cluster Density of states Magnetism Optical property
Low-Temperature Crystallization Enables 21.9% Efficient Single-Crystal MAPbI3 Inverted Perovskite Solar Cells
Year: 2020 DOI:https://pubs.acs.org/doi/abs/10.1021/acsenergylett.9b02787
Authors: Abdullah Y Alsalloum, Bekir Turedi, Xiaopeng Zheng, Somak Mitra, Ayan A Zhumekenov, Kwang Jae Lee, Partha Maity, Issam Gereige, Ahmed AlSaggaf, Iman S Roqan, Omar F Mohammed, Osman M Bakr
  • Low-Temperature Crystallization Enables 21.9% Efficient Single-Crystal MAPbI3 Inverted Perovskite Solar Cells
Titanium Carbide MXene Nucleation Layer for Epitaxial Growth of High-Quality GaN Nanowires on Amorphous Substrates
Year: 2020 DOI:https://pubs.acs.org/doi/abs/10.1021/acsnano.9b09126
Authors: Aditya Prabaswara, Hyunho Kim, Jung-Wook Min, Ram Chandra Subedi, Dalaver H Anjum, Bambar Davaasuren, Kalani Moore, Michele Conroy, Somak Mitra, Iman S Roqan, Tien Khee Ng, Husam N Alshareef, Boon S Ooi
  • Titanium Carbide MXene Nucleation Layer for Epitaxial Growth of High-Quality GaN Nanowires on Amorphous Substrates
Enhanced Photoresponse of WS2 Photodetectors through Interfacial Defect Engineering Using a TiO2 Interlayer
Year: 2020 DOI:https://doi.org/10.1021/acsaelm.0c00011
Authors: Yusin Pak, Woojin Park, Naresh Alaal, Yogeenth Kumaresan, S Assa Aravindh, Somak Mitra, Bin Xin, Jung-Wook Min, Hyeonghun Kim, Namsoo Lim, Byungjin Cho, Gun-Young Jung, Muhammad M Hussain, Iman S Roqan
  • Enhanced Photoresponse of WS2 Photodetectors through Interfacial Defect Engineering Using a TiO2 Interlayer
Dark-current reduction accompanied photocurrent enhancement in p-type MnO quantum-dot decorated n-type 2D-MoS2-based photodetector
Year: 2020
Authors: Yusin Pak, Somak Mitra, Naresh Alaal, Bin Xin, Sergei Lopatin, Dhaifallah Almalawi, J-W Min, H Kim, W Kim, G-Y Jung, Iman S Roqan
  • Dark-current reduction accompanied photocurrent enhancement in p-type MnO quantum-dot decorated n-type 2D-MoS2-based photodetector
Methods and apparatuses for fabricating perovskite-based devices on cost-effective flexible conductive substrates
Year: 2020
Authors: Iman Salem ROQAN ,Norah Mohammed ALWADAI, Somak Mitra
  • Methods and apparatuses for fabricating perovskite-based devices on cost-effective flexible conductive substrates
Sub-quantum-well influence on carrier dynamics in high efficiency DUV dislocation-free AlGaN/AlGaN-based multiple-quantum-wells
Year: 2020
Authors: Idris A. Ajia, Dhaifallah Almalawi, ·        Yi Lu, Sergei Lopatin, Xiaohang Li, Zhiqiang Liu, Iman S. Roqan
  • Sub-quantum-well influence on carrier dynamics in high efficiency DUV dislocation-free AlGaN/AlGaN-based multiple-quantum-wells
Method and apparatus for fabricating high performance optoelectronic devices
Year: 2020
Authors: Somak Mitra, Iman S Roqan, Yusin Pak
Enhanced UV Emission of GaN Nanowires Functionalized by Wider Band Gap Solution-Processed p-MnO Quantum Dots
Year: 2020 DOI:doi.org/10.1021/acsami.0c07029
Authors: Dhaifallah Almalawi, Sergei Lopatin, Somak Mitra, Tahani Flemban, Alexandra-Madalina Siladie, Bruno Gayral, Bruno Daudin, Iman S. Roqan
  • III-Nitrides
  • semiconductor nanowires
  • light-emitting devices
  • p-type MnO quantum dots
  • electron energy loss spectroscopy
Understanding the origins of ultralong radiative states in metal halide perovskite crystals
Year: 2018
Authors: Erkki Alarousu , Ahmed El-Zohry, Kwangjae Lee, Bekir Turedi, Ibrahim Dursun, Jun Yin, Ayan Zhumekenov, Somak Mitra, Iman Salem Roqan, Chen Yang , Anton Malko, Mohammed Omar, Osman Bakr
  • halide perovskite crystals
Patent: Synthesis of vertically aligned metal oxide nanostructures
Year: 2018
Authors: Iman Salem Roqan, Tahani Hassan Flemban
  • Nanostructures
Scalable integration of periodically aligned 2D-MoS2 nanoribbon array
Year: 2018
Authors: Yusin Pak, Yonghum Kim, N. Lim, J-W Min, Woojin Park, W. Kim, Y. Jeong, H. Kim, Somak Mitra, B. Xin, T-W Kim, Iman Salem Roqan, Byungjin Cho, Gun-Young Jung, K. Kim
  • Two-dimensional (2D) Molybdenum Disulfide
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