Article
Chemistry, Physical
Zhijie Zhou, Ye Tian, Yongbo Zhou, Shangfei Yao, Wenchao Lin, Wenhong Sun, Hao Huang, Lishuang Wang, Li Chen, Bingsuo Zou
Summary: In this paper, a ZnO:Ga microwire/p-type gallium nitride hetero-junction light-emitting diode was fabricated and lasing emission was observed near the silver electrode. The lasing was interpreted as trap-state FP-mode lasing. By sputtering gold on the surface of the ZnO:Ga microwire, the device's luminescence was enhanced and anomalous spectral signals appeared at a reverse current of 20 mA. The luminescence enhancement was attributed to hot electron transfer induced by plasmons and the strange spectral phenomenon was caused by Fano resonance due to plasmon-microcavity coupling.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Islam Mohammad Shafiqul, Raj Deep, Jie Lin, Toshiyuki Yoshida, Yasuhisa Fujita
Summary: This article presents the world's first homojunction UV light-emitting diode (LED) based on both p-type and n-type ZnO nanoparticles. By inserting an n-ZnO NP layer, the emission power of these LEDs is doubled, showing near UV electroluminescence (EL) at room temperature.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Md. Azizar Rahman, S. M. Naimul Mamun, Abul Kashem Mohammad Akther Hossain, Cuong Ton-That
Summary: In this work, an efficient p-n homojunction LED is fabricated based on the secondary growth of Ga-doped ZnO (GZO) nanorods onto a p-type Li-doped ZnO (LZO) thin film. The optimized GZO nanorods and LZO films exhibit low turn-on voltage and bright-yellow-orange electroluminescence. The optimized LED based on the GZO nanorods is 16 times more efficient in EL than the equivalent device made from ZnO nanorods.
ACS APPLIED NANO MATERIALS
(2023)
Article
Physics, Applied
Simran Arora, Subhabrata Dhar
Summary: The electroluminescence properties of n(+)-ZnO/p-GaN pn(+)-heterojunctions grown epitaxially have been investigated as a function of applied bias and temperature. The study reveals the presence of indirect interfacial excitons at lower temperatures. The electroluminescence feature associated with these excitons is redshifted with increasing forward bias. The formation of these excitons becomes unsustainable when the applied bias or temperature exceeds a threshold due to leakage and thermal escape of charges.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Maosheng Liu, Mingming Jiang, Qinzhi Zhao, Kai Tang, Shulin Sha, Binghui Li, Caixia Kan, Da Ning Shi
Summary: Through a single MW field-effect transistor, we successfully synthesized Sb-doped p-type ZnO microwires and achieved an optical microcavity with a regular hexagonal cross-section and smooth sidewall facets, enabling whispering-gallery-mode lasing. By combining p-ZnO:Sb MW with an n-ZnO layer, we constructed a single ZnO:Sb MW homojunction LED which exhibited typical UV emission. Spatially resolved electroluminescence spectra demonstrated strong exciton-photon coupling in the p-ZnO:Sb MW/n-ZnO homojunction LED, contributing to the exciton-polariton effect. Varying the cross-sectional dimensions of ZnO:Sb wires further modulated the exciton-photon coupling strengths. These results provide an effective exemplification of reliable p-type ZnO and greatly promote the development of low-dimensional ZnO homojunction optoelectronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Optics
Hui Wang, Guojiao Xiang, Yijian Zhou, Wenbo Peng, Yue Liu, Jiahui Zhang, Jinming Zhang, Rong Li, Yang Zhao
Summary: The influence of ambient temperature on the electrical characteristics of p-CuO/i-Ga2O3/n-GaN heterojunction diode was studied, showing typical diode rectification characteristics with high rectification ratios at different ambient temperatures. It was found that the temperature sensitivity of the forward current was greater than that of the reverse current at driving voltages of +/- 3V.
JOURNAL OF LUMINESCENCE
(2022)
Article
Engineering, Electrical & Electronic
X. A. Cao, N. Liu, D. Shelhammer, H. J. Wang, Y. M. Zhou
Summary: MoO3 and Ca were incorporated into ambipolar 4,4'-N, N'-dicarbazolylbiphenyl (CBP) to improve both charge transport and injection in single-carrier devices. The p-i-n homojunction blue OLEDs based on this structure showed higher luminance, efficiency, and lifetime compared to traditional multilayer heterojunction blue OLEDs, benefiting from the simplified structure and stable inorganic dopants.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Biochemistry & Molecular Biology
Mu-Jen Lai, Yi-Tsung Chang, Shu-Chang Wang, Shiang-Fu Huang, Rui-Sen Liu, Xiong Zhang, Lung-Chien Chen, Ray-Ming Lin
Summary: This paper reports an AlGaN-based UVB-LED with peak wavelength at 293 nm that showed almost no efficiency droop in a wide temperature range. By achieving uniform distribution of injected electrons and holes within the multiple quantum wells, the J-droop phenomenon was effectively overcome.
Article
Engineering, Electrical & Electronic
Charu Madhu, Navneet Kaur, Inderpreet Kaur, Vijay Kumar, Daljeet Kaur
Summary: Surface defects significantly affect the performance of LEDs. Surface passivation using ZnO nanoparticles through wet chemical precipitation effectively reduces surface defects. An LED is produced using capped ZnO. The structural components of an ITO/PEDOT:PSS/F8BT/1.ZnO/TPBi/LiF/Al-based LED demonstrate luminescence through the interaction between zinc oxide (1.ZnO) and F8BT at the interface under an electric field. The device exhibits rectifying properties with a threshold voltage of about 5 V and emits green electroluminescence (EL) at a wavelength of approximately 527 nm when forward biased at normal temperature.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xin Yang, Rong Wu, Biyuan Zheng, Ziyu Luo, Wenxia You, Huawei Liu, Lihui Li, Yushuang Zhang, Qin Tan, Delang Liang, Ying Chen, Junyu Qu, Xiao Yi, Xingjun Wang, Jun Zhou, Huigao Duan, Shuangyin Wang, Shula Chen, Anlian Pan
Summary: Transition metal dichalcogenides (TMDs) have emerged as building blocks for nanoscale light sources. In this study, a waveguide-integrated light-emitting device based on TMDs is demonstrated, showing efficient optical routing and confinement. The device exhibits clear rectification under forward biasing and produces electroluminescence (EL) at a high driving current, indicating facilitated carrier injection via intervalley scattering.
Article
Materials Science, Multidisciplinary
Jiaxun Zhang, Jie Chen, Tianyou Zhang, Dawei Gu, Linjiang Shen, Lei Wang, Haiyang Xu, Yichun Liu
Summary: This study demonstrates an application of rock-salt ZnO in light emitting diodes, where naked eye visible electroluminescence can be observed even at low injection current.
Article
Chemistry, Physical
Dongwei Sun, Yudong Wen, Jia-Min Jin, Lu Zhou, Qiang Liu, Bo Liu, Xiaohui Wu, Nian Tang, Yongyan Zhou, Shaomin Ji, Yanping Huo
Summary: A new phenanthroimidazole-based emitter with an electron-rich phenoxazine (PIPXZ) has been developed, which possesses a locally twisted donor-pi-acceptor conformation due to the introduction of phenoxazine. The unique molecular structure of PIPXZ leads to an intense charge-transfer excited state and good fluorescence efficiency. The emitter has been systematically investigated and successfully applied in an organic light-emitting device, demonstrating a high external quantum efficiency.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Hailong Wang, Xiaoqi Tang, Guolong Sun, Desui Chen, Zhizhen Ye, Yang Liu, Yizheng Jin
Summary: In this research, the dispersion of ZnO nanoparticles in nonpolar n-octane was achieved by changing the surface ligands from acetates to thiols. This prevented the destruction of perovskite films and inhibited exciton quenching, leading to the successful fabrication of high-performance all-solution-processed green perovskite LEDs. The brightness of the LEDs reached 21,000 cd/m2 and the external quantum efficiency was 6.36%.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Youwei Zhang, Kankan Ma, Chun Zhao, Wei Hong, Changjiang Nie, Zhi-Jun Qiu, Shun Wang
Summary: This study demonstrates a lateral p-i-n homojunction photodiode based on multilayer WSe2, showing ideal rectifying behavior and excellent photodetecting performance, as well as record-breaking response time and bandwidth. The diode is formed through selective doping and surface plasma treatment, and holds potential for future applications in self-powered high-frequency weak signal photodetection.
Article
Chemistry, Multidisciplinary
Wenhao Bai, Mingming Liang, Tongtong Xuan, Ting Gong, Liang Bian, Huili Li, Rong-Jun Xie
Summary: By using L-glutathione reduced (GSH) as surface ligands, high-quality phenethylammonium tin iodide (PEA2SnI4) perovskite films were successfully constructed, leading to efficient pure red light-emitting diodes. This ligand engineering strategy effectively reduces the crystallization rate and suppresses the oxidation of Sn2+ ions, improving the film morphology and optical properties. The study demonstrates the feasibility of ligand engineering in enhancing the electroluminescence performance of Sn-based perovskite light-emitting diodes (PeLEDs).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Minhuan Wang, Xiaoqing Jiang, Jiming Bian, Yulin Feng, Chen Wang, Yang Huang, Yadong Zhang, Yantao Shi
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Energy & Fuels
Changyu Liu, Guojun Zhang, Muslum Arici, Ji Bian, Dong Li
Article
Crystallography
Qiuju Feng, Tongtong Li, Fang Li, Yunzheng Li, Bo Shi, Chong Gao, Deyu Wang, Hongwei Liang
JOURNAL OF CRYSTAL GROWTH
(2019)
Article
Chemistry, Physical
Jingchang Sun, Peida Li, Jiangying Qu, Xue Lu, Yaqiao Xie, Feng Gao, Yue Li, Mingfei Gang, Qiuju Feng, Hongwei Liang, Xiaochuan Xia, Chengren Li, Shichong Xu, Jiming Bian
Article
Chemistry, Multidisciplinary
Yingying Shao, Chunyang Zhang, Shi Wang, Ying Yan, Yulin Feng, Jiming Bian, Yantao Shi
ADVANCED MATERIALS INTERFACES
(2019)
Article
Chemistry, Physical
Minhuan Wang, Yulin Feng, Qingshun Dong, Jiming Bian, Chen Wang, Yang Huang, Congcong Ma, Yantao Shi
CHEMICAL PHYSICS LETTERS
(2019)
Article
Materials Science, Multidisciplinary
Jianjun Shi, Hongwei Liang, Xiaochuan Xia, Zhuo Li, Ze Long, Heqiu Zhang, Yang Liu
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Chemistry, Analytical
Dongyang Xue, Heqiu Zhang, Aqrab ul Ahmad, Hongwei Liang, Jun Liu, Xiaochuan Xia, Wenping Guo, Huishi Huang, Nanfa Xu
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Aqrab ul Ahmad, Hongwei Liang, Sajid Ali, Qasim Abbas, Amjad Farid, Adnan Ali, Muzammil Iqbal, Ijaz Ahmad Khan, Lujun Pan, Akmal Abbas, Zahid Farooq
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Materials Science, Multidisciplinary
Wenyi Shao, Xiang Wang, Zhenzhong Zhang, Jie Huang, Zhongyuan Han, Shuai Pi, Qiang Xu, Xiaodong Zhang, Xiaochuan Xia, Hongwei Liang
Summary: This paper demonstrates a highly efficient and low-cost X-ray scintillator based on 2D butylammonium lead bromide perovskite and manganese (II) activator, which shows potential for commercial high-resolution X-ray imaging applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Wenyi Shao, Guoyang Zhu, Xiang Wang, Zhenzhong Zhang, Haocheng Lv, Weibo Deng, Xiaodong Zhang, Hongwei Liang
Summary: A novel scintillator based on BTP2MnBr4 nanocrystal membranes was developed, which exhibited excellent properties such as high light output, high spatial resolution, flexibility, non-toxicity, cost-effectiveness, high linear response to X-ray dose rate, and low detection limit. It also demonstrated strong radiation hardness, long-term thermal stability, and suppressed light cross-talk in X-ray imaging. Impressive high-spatial resolution X-ray imaging and well-resolved 3D dynamic rendering X-ray projections were achieved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wenyi Shao, Tengyue He, Jian-Xin Wang, Yang Zhou, Peng Yuan, Wentao Wu, Zhenzhong Zhang, Osman M. Bakr, Hongwei Liang, Omar F. Mohammed
Summary: Dual-energy X-ray imaging (DEXI) provides more detailed material-specific information compared to traditional single-energy X-ray imaging. A top-filter-bottom (TFB) sandwich structure scintillator was designed and fabricated for high-resolution DEXI in a single exposure, capable of discriminating between emission spectra and achieving exceptional resolution. The breakthrough research paves the way for scintillator architectures specifically designed for DEXI.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Chengwei Li, Yifeng Zhang, Shuaitao Yang, Huitong Zhao, Yuan Guo, Tianze Cong, Hui Huang, Zeng Fan, Hongwei Liang, Lujun Pan
Summary: This article introduces a flexible humidity sensor based on a tissue-carbon nanocoil-carbon nanotube composite. The sensor exhibits a wide sensing range, high sensitivity, long-term stability, high resolution accuracy, and fast response time. It also demonstrates excellent performance in various applications, indicating great potential in the field.
Article
Materials Science, Multidisciplinary
Jianjun Shi, Hongwei Liang, Xiaochuan Xia, Ze Long, Heqiu Zhang, Yang Liu, Xin Dong, Zhitai Jia
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Jun Liu, Heqiu Zhang, Dongyang Xue, Aqrab ul Ahmad, Xiaochuan Xia, Yang Liu, Huishi Huang, Wenping Guo, Hongwei Liang
