Solution-processed ZnO/SnO2 bilayer ultraviolet phototransistor with high responsivity and fast photoresponse
作者： Hojoong Choi , Sehun Seo , Jong-Hoon Lee , Sang-Hyun Hong , Jaesun Song
DOI: 10.1039/C8TC01771A
关键词: Fabrication 、 Materials science 、 Optoelectronics 、 Photodiode 、 Layer (electronics) 、 Bilayer 、 Ultraviolet 、 Transport layer 、 Direct and indirect band gaps 、 Responsivity
摘要: UV phototransistors based on ZnO, a material considered promising owing to its wide direct bandgap and high stability in harsh environments, have been intensively investigated. However, ZnO single-layer phototransistors, especially solution-processed devices, still exhibit poor electrical photoresponse characteristics. Herein, we report the fabrication of low-cost, large-area, high-performance ZnO/SnO2 bilayer phototransistor with improved characteristics attained by inserting SnO2 carrier transport layer, which is actual path electrons. The photogenerated electrons are readily transferred from UV-sensitive layer lower conduction band than layer. In addition, efficient extraction through field effect mobility contributes improvement phototransistor. exhibits responsivity detectivity as well fast photoresponse. These results demonstrate that developed this study provides novel approach for improving performance low-cost large-area processing.
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sci-hub.se 参考文章(50)
Yeonho Kim, Sang Jin Kim, Sung-Pyo Cho, Byung Hee Hong, Du-Jeon Jang, High-performance ultraviolet photodetectors based on solution-grown ZnS nanobelts sandwiched between graphene layers Scientific Reports. ,vol. 5, pp. 12345- 12345 ,(2015) , 10.1038/SREP12345
Zongyou Yin, Hai Li, Hong Li, Lin Jiang, Yumeng Shi, Yinghui Sun, Gang Lu, Qing Zhang, Xiaodong Chen, Hua Zhang, Single-Layer MoS2 Phototransistors ACS Nano. ,vol. 6, pp. 74- 80 ,(2012) , 10.1021/NN2024557
Dominik Kufer, Ivan Nikitskiy, Tania Lasanta, Gabriele Navickaite, Frank H. L. Koppens, Gerasimos Konstantatos, Hybrid 2D–0D MoS2–PbS Quantum Dot Photodetectors Advanced Materials. ,vol. 27, pp. 176- 180 ,(2015) , 10.1002/ADMA.201402471
Kiran Kumar Manga, Junzhong Wang, Ming Lin, Jie Zhang, Milos Nesladek, Venkatram Nalla, Wei Ji, Kian Ping Loh, High‐Performance Broadband Photodetector Using Solution‐Processible PbSe–TiO2–Graphene Hybrids Advanced Materials. ,vol. 24, pp. 1697- 1702 ,(2012) , 10.1002/ADMA.201104399
J. B. K. Law, J. T. L. Thong, Simple fabrication of a ZnO nanowire photodetector with a fast photoresponse time Applied Physics Letters. ,vol. 88, pp. 133114- ,(2006) , 10.1063/1.2190459
Zhenhua Sun, Zhike Liu, Jinhua Li, Guo-an Tai, Shu-Ping Lau, Feng Yan, Infrared Photodetectors Based on CVD-Grown Graphene and PbS Quantum Dots with Ultrahigh Responsivity Advanced Materials. ,vol. 24, pp. 5878- 5883 ,(2012) , 10.1002/ADMA.201202220
Lirong Zheng, Yuanhui Zheng, Chongqi Chen, Yingying Zhan, Xingyi Lin, Qi Zheng, Kemei Wei, Jiefang Zhu, Network structured SnO2/ZnO heterojunction nanocatalyst with high photocatalytic activity. Inorganic Chemistry. ,vol. 48, pp. 1819- 1825 ,(2009) , 10.1021/IC802293P
Wei Tian, Tianyou Zhai, Chao Zhang, Song-Lin Li, Xi Wang, Fei Liu, Dequan Liu, Xingke Cai, Kazuhito Tsukagoshi, Dmitri Golberg, Yoshio Bando, Low-Cost Fully Transparent Ultraviolet Photodetectors Based on Electrospun ZnO-SnO2Heterojunction Nanofibers Advanced Materials. ,vol. 25, pp. 4625- 4630 ,(2013) , 10.1002/ADMA.201301828
Md. Tamez Uddin, Yohann Nicolas, Céline Olivier, Thierry Toupance, Laurent Servant, Mathis M. Müller, Hans-Joachim Kleebe, Jürgen Ziegler, Wolfram Jaegermann, Nanostructured SnO2–ZnO Heterojunction Photocatalysts Showing Enhanced Photocatalytic Activity for the Degradation of Organic Dyes Inorganic Chemistry. ,vol. 51, pp. 7764- 7773 ,(2012) , 10.1021/IC300794J
Min Zhang, Dongmei Li, Jingran Zhou, Weiyou Chen, Shengping Ruan, Ultraviolet detector based on TiO2 nanowire array–polymer hybrids with low dark current Journal of Alloys and Compounds. ,vol. 618, pp. 233- 235 ,(2015) , 10.1016/J.JALLCOM.2014.07.040