Self-powered 3D TIs Bi2Te3 thin film/pentacene heterojunction photodetector with broadband response

Ming Yang; Jun Wang; Yadong Jiang

doi:10.1117/12.2565007

17 April 2020 Self-powered 3D TIs Bi₂Te₃ thin film/pentacene heterojunction photodetector with broadband response

Ming Yang, Jun Wang, Yadong Jiang

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114554Z (2020) https://doi.org/10.1117/12.2565007
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

Topological insulators (TIs) are theoretically predicted to be promising candidate materials for broadband photodetection from the visible to the infrared (IR). As a 3DTI, Bi₂Te₃ has reattracted greater interest in recent years. Here, we report a study on a self-powered organic/inorganic photodetector based on N-type Bi₂Te₃ thin films and P-type pentacene heterojunction with wideband response from 450 nm to 1550 nm. In addition, the optimized responsivity reaches 14.89 A W^-1 , with the corresponding eternal quantum effciency of 2840%. These excellent properties prove that the combination with low molecular weight organic matter is the future direction for the preparation of high performance photodetectors by TIs. The findings represent a fundamental form scenario for advancement of the next-generation highperformance array photodetectors and highly integrated optoelectronic products.

Citation Download Citation

Ming Yang, Jun Wang, and Yadong Jiang "Self-powered 3D TIs Bi₂Te₃ thin film/pentacene heterojunction photodetector with broadband response", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114554Z (17 April 2020); https://doi.org/10.1117/12.2565007

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