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Semiconductor and Material Spectroscopy Laboratory
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2021

  1. Publications
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Highly Stable and Ultrafast Hydrogen Gas Sensor Based on 15 nm Nanogaps Switching in a Palladium–Gold Nanoribbons Array
Year: 2018
Authors: Gun‐Young Jung usin Pak, Yeonggyo Jeong, Naresh Alaal, Hyeonghun Kim, Jeonghoon Chae, Jung‐Wook Min, Assa Aravindh Sasikala Devi, Somak Mitra, Da Hoon Lee, Yogeenth Kumaresan, Woojin Park, Tae‐Wook Kim, Iman S Roqan
  • Highly Stable and Ultrafast Hydrogen Gas Sensor Based on 15 nm Nanogaps Switching in a Palladium–Gold Nanoribbons Array
Enhanced Performance of MoS2 Photodetectors by Inserting an ALD‐Processed TiO2 Interlayer
Year: 2018 DOI:https://doi.org/10.1002/smll.201703176
Authors: Yusin Pak, Woojin Park, Somak Mitra, Assa Aravindh Sasikala Devi, Kalaivanan Loganathan, Yogeenth Kumaresan, Yonghun Kim, Byungjin Cho, Gun‐Young Jung, Muhammad M Hussain, Iman S Roqan
  • Enhanced Performance of MoS2 Photodetectors by Inserting an ALD‐Processed TiO2 Interlayer
Photonics: Enhanced Performance of MoS2 Photodetectors by Inserting an ALD‐Processed TiO2 Interlayer (Small 5/2018)
Year: 2018 DOI:https://doi.org/10.1002/smll.201870022
Authors: Yusin Pak, Woojin Park, Somak Mitra, Assa Aravindh Sasikala Devi, Kalaivanan Loganathan, Yogeenth Kumaresan, Yonghun Kim, Byungjin Cho, Gun‐Young Jung, Muhammad M Hussain, Iman S Roqan
  • Photonics: Enhanced Performance of MoS2 Photodetectors by Inserting an ALD‐Processed TiO2 Interlayer (Small 5/2018)
GaN/AlGaN multiple quantum wells grown on transparent and conductive (-201)-oriented β-Ga2O3 substrate for UV vertical light emitting devices
Year: 2018 DOI:https://doi.org/10.1063/1.5025178
Authors: Idris A Ajia, Y Yamashita, K Lorenz, MM Muhammed, L Spasevski, Dhaifallah Almalawi, J Xu, K Iizuka, Y Morishima, Dalaver H Anjum, Nini Wei, RW Martin, A Kuramata, Iman S Roqan
  • GaN/AlGaN multiple quantum wells grown on transparent and conductive (-201)-oriented β-Ga2O3 substrate for UV vertical light emitting devices
Extremely reduced dielectric confinement in two-dimensional hybrid perovskites with large polar organics
Year: 2018
Authors: Bin Cheng, Ting-You Li, Partha Maity, Pai-Chun Wei, Dennis Nordlund, Kang-Ting Ho, Der-Hsien Lien, Chun-Ho Lin, Ru-Ze Liang, Xiaohe Miao, Idris A Ajia, Jun Yin, Dimosthenis Sokaras, Ali Javey, Iman S Roqan, Omar F Mohammed, Jr-Hau He
  • Extremely reduced dielectric confinement in two-dimensional hybrid perovskites with large polar organics
Tuning the electronic properties of hexagonal two-dimensional GaN monolayers via doping for enhanced optoelectronic applications
Year: 2018 DOI:https://doi.org/10.1021/acsanm.8b01852
Authors: Naresh Alaal, Iman S Roqan
  • Tuning the electronic properties of hexagonal two-dimensional GaN monolayers via doping for enhanced optoelectronic applications
Modification of electronic properties of GaN monolayer by group III-VI dopants: A first-principles study
Year: 2019
Authors: Naresh Alaal, Iman Roqan
  • Modification of electronic properties of GaN monolayer by group III-VI dopants: A first-principles study
Electronic properties of chemically functionalized armchair GaN nanoribbons: A computational study
Year: 2019
Authors: Naresh Alaal, Iman Roqan
  • Electronic properties of chemically functionalized armchair GaN nanoribbons: A computational study
Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics
Year: 2019 DOI:https://doi.org/10.1021/acsami.8b17249
Authors: Bin Xin, Yusin Pak, Somak Mitra, Dhaifallah Almalawi, Norah Alwadai, Yuhai Zhang, Iman S Roqan
  • Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics
Correction: Analysis on the energetics, magnetism and electronic properties in a 45° ZnO grain boundary doped with Gd
Year: 2019 DOI:https://doi.org/10.1039/C9RA90001B
Authors: Assa Aravindh Sasikala Devi, Iman S Roqan
  • Correction: Analysis on the energetics, magnetism and electronic properties in a 45° ZnO grain boundary doped with Gd
structural and optical properties of InxGa1-xN/GaN epilayers grown on a miscut sapphire substrate
Year: 2019 DOI:10.15406/mseij.2018.02.00056
Authors: Idris A Ajia, SMC Miranda, N Franco, E Alves, K Lorenz, KP O'Donnell, Iman S Roqan
  • structural and optical properties of InxGa1-xN/GaN epilayers grown on a miscut sapphire substrate
Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires
Year: 2019 DOI:https://doi.org/10.1021/acs.chemmater.9b00680
Authors: Jiakai Liu, Kepeng Song, Yongwoo Shin, Xin Liu, Jie Chen, Ke Xin Yao, Jun Pan, Chen Yang, Jun Yin, Liang-Jin Xu, Haoze Yang, Ahmed M El-Zohry, Bin Xin, Somak Mitra, Mohamed Nejib Hedhili, Iman S Roqan, Omar F Mohammed, Yu Han, Osman M Bakr
  • Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires
Catalyst-Free Vertical ZnO-Nanotube Array Grown on p-GaN for UV-Light-Emitting Devices
Year: 2019 DOI:https://doi.org/10.1021/acsami.9b06195
Authors: Norah Alwadai, Idris A Ajia, Bilal Janjua, Tahani H Flemban, Somak Mitra, Nimer Wehbe, Nini Wei, Sergei Lopatin, Boon S Ooi, Iman S Roqan
  • Catalyst-Free Vertical ZnO-Nanotube Array Grown on p-GaN for UV-Light-Emitting Devices
Three-dimensional band diagram in lateral polarity junction III-nitride heterostructures
Year: 2019 DOI:https://doi.org/10.1364/OPTICA.6.001058
Authors: Wei Guo, Somak Mitra, Houqiang Xu, Moheb Sheikhi, Haiding Sun, Kangkai Tian, Zi-hui Zhang, Haibo Jiang, Iman S Roqan, Xiaohang Li, Jichun Ye
  • Three-dimensional band diagram in lateral polarity junction III-nitride heterostructures
Solar-Blind Self-Powered Photodetector Using Solution-Processed Amorphous Core–Shell Gallium Oxide Nanoparticles
Year: 2019 DOI:https://pubs.acs.org/doi/abs/10.1021/acsami.9b11694
Authors: Somak Mitra, Yusin Pak, Bin Xin, Dhaifallah R Almalawi, Nimer Wehbe, Iman S Roqan
  • Solar-Blind Self-Powered Photodetector Using Solution-Processed Amorphous Core–Shell Gallium Oxide Nanoparticles
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
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