文献类型：期刊文献

英文题名：Ultrasensitive photodetectors enabled by pressure-induced atomic-level optimization of graphene-based heterojunctions

作者：Fang, Zhening[1,2];Wang, Jihong[1];Liu, Wenhao[3];Liang, Zhiheng[4];Pan, Qiubo[3];Lu, Peng[5];Cui, Bin[5];Lu, Xiaowei[6];Jiang, Jianhua[6];Li, Yuan[7];Gu, Zhen[1];Xiu, Peng[4];Wang, Huifeng[1];Fang, Haiping[3,8,9]

机构：[1]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai, Peoples R China;[2]ShanghaiTech Univ, Ctr Transformat Sci, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai, Peoples R China;[4]Zhejiang Univ, Dept Engn Mech, Hangzhou, Peoples R China;[5]Shandong Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, Jinan, Peoples R China;[6]Univ Sci & Technol China, Suzhou Inst Adv Res, Suzhou, Peoples R China;[7]Shandong Univ, Sch Informat Sci & Engn, Qingdao, Peoples R China;[8]Zhejiang Univ, Sch Phys, Hangzhou, Peoples R China;[9]Univ Chinese Acad Sci, Wenzhou Inst, Wenzhou, Zhejiang, Peoples R China

年份：2026

卷号：17

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001766809900005)】；

基金：We thank Profs. Jinping Li, Liang Chen, Yingying Huang, and Liuhua Mu, for their constructive suggestions. This work is supported by the Shanghai Science and Technology Innovation Action Plan (23JC1401400 to H.F.), National Natural Science Foundation of China (Nos. 12435001 to H.F., 12174337 to P.X., 52575661 to Y.L., 12125504 to J.J.), the CAS Pioneer Hundred Talents Program (to J.J.), Postdoctoral Fellowship Program of CPSF (No. GZC20252242 to J.W.), and the Fundamental Research Funds for the Central Universities of East China University of Science and Technology. We also thank the Shanghai Synchrotron Radiation Facility of BL09U for the assistance on X-Peem measurements, and Shandong University for Femtosecond transient absorption spectroscopy system (TAS, 2104573S).

语种：英文

摘要：Photodetectors with high photoresponsivity are crucial in a wide range of emerging fields. Here, we report the realization of photodetectors based on co-assembled composite membranes consisting of copper phthalocyanine (CuPc) molecules and graphene oxide (GO) sheets, showing a photoresponsivity as high as similar to 10(7) A/W under 3 nW illumination and a moderate external pressure (similar to 1 atm) in the visible range. We attribute the high photoresponsivity to the pressure-induced optimization of the atomic-level heterojunctions between photoactive CuPc molecules and adjacent GO sheets in the photodetector, which enhances the electronic coupling at the heterojunction for charge transport. The photodetectors show good flexibility for electronic skin applications, enabling simultaneous contact sensing and non-contact perception under ambient illumination down to dim moonlight. The developed strategy provides a promising perspective for fabricating next-generation photoelectric conversion devices with potential applications spanning intelligent sensing, aerospace technologies, and defence-related photonic platforms.