High-Performance Phototransistor of Epitaxial PbS Nanoplate-Graphene Heterostructure with Edge Contact
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- 作者：Qisheng Wang ; Yao Wen ; Peng He ; Lei Yin ; Zhenxing Wang ; Feng Wang ; Kai Xu ; Yun Huang ; Fengmei Wang ; Chao Jiang and Jun He
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：August 10, 2016
- 年：2016
- 卷：28
- 期：30
- 页码：6497-6503
- 全文大小：1003K
- ISSN：1521-4095
文摘
Fast infrared response (rising time = 24 ms) and ultrahigh photoconductive gain (108) are obtained in epitaxial PbS-nanoplate–graphene heterostructures. Combining density functional theory with experiments, this study finds single-crystalline PbS nanoplates are covalently bound to the grapheme edge with strong chemical hybridization, which offers a fast carrier transmission path.