Ultrahigh Photogain Nanoscale Hybrid Photodetectors

Yuanwei Lin; Xuefeng Guo

doi:10.1002/smll.201403724

Ultrahigh Photogain Nanoscale Hybrid Photodetectors

Small. 2015 Jun 24;11(24):2856-61. doi: 10.1002/smll.201403724. Epub 2015 Feb 19.

Authors

Yuanwei Lin^{1

2}, Xuefeng Guo^{1

3}

Affiliations

¹ Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China.
² Center for Nanoscience and Nanotechnology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P.R. China.
³ Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing, 100871, P.R. China.

PMID: 25703952
DOI: 10.1002/smll.201403724

Abstract

A class of ultrasensitive nanoscale hybrid photodetectors formed from carbon electrode-molecule junctions using P3HT:PCBM as photoresponsive semiconductors are demonstrated. The unique device architecture, tunability of nanoscale channel lengths and the optimized contact nature of semiconductor/electrode interfaces led to ultrahigh photogains of 1000 with graphene nanoelectrodes and 1 000 000 with single-walled carbon nanotube nanoelectrodes.

Keywords: contact interfaces; molecular junctions; photodetectors; photogain.

Publication types

Research Support, Non-U.S. Gov't