Epitaxial Ultrathin Organic Crystals on Graphene for High-Efficiency Phototransistors

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• 作者：Xiaolong Liu ; Xiaoguang Luo ; Haiyan Nan ; Hui Guo ; Peng Wang ; Linglong Zhang ; Minmin Zhou ; Ziyi Yang ; Yi Shi ; Weida Hu ; Zhenhua Ni ; Teng Qiu ; Zongfu Yu ; Jian-Bin Xu and Xinran Wang
• 刊名：Advanced Materials
• 出版年：2016
• 出版时间：July 13, 2016
• 年：2016
• 卷：28
• 期：26
• 页码：5200-5205
• 全文大小：940K
• ISSN：1521-4095

文摘

Epitaxially grown ultrathin organic semiconductors on graphene show great promise as highly efficient phototransistors. The devices exhibit a strong photoresponse down to the limit of a monolayer organic crystal, with a photoresponsivity higher than 10⁴ A W⁻¹ and a photoconductive gain over 10⁸. The excellent performance is attributed to the high quality of the organic crystal and interface, a unique feature of van der Waals epitaxy.