Issue 4, 2016

Toward high performance broad spectral hybrid organic–inorganic photodetectors based on multiple component organic bulk heterojunctions

Abstract

Broadening the absorption bandwidth of photodetectors by incorporating multiple absorber materials to form bulk-heterojunction active layers is an attractive method of resolving the narrow absorption of organic semiconductors. Here we report the fabrication and characterization of broad spectral hybrid organic–inorganic photodetectors through an optimized multiple component organic bulk heterojunctions route. The study clearly shows that both the two-component and three-component photodetectors have ultrahigh photosensitivity and spectral uniformity of responsivity for visible to near-infrared light. Operating at room temperature, the three-component based photodetectors achieve ultrahigh photosensitivities of 30–50 A W−1 at ∼0.1 mW incident optical power, which are almost two orders of magnitude larger than commercial Si and InGaAs photodiodes. Also, this work demonstrates that the wide variation of optical absorption of multiple component organic bulk heterojunctions will provide a strategy to fabricate facile broadband photodetectors.

Graphical abstract: Toward high performance broad spectral hybrid organic–inorganic photodetectors based on multiple component organic bulk heterojunctions

Supplementary files

Article information

Article type
Paper
Submitted
01 Oct 2015
Accepted
17 Dec 2015
First published
18 Dec 2015

J. Mater. Chem. C, 2016,4, 815-822

Toward high performance broad spectral hybrid organic–inorganic photodetectors based on multiple component organic bulk heterojunctions

F. Zhao, X. Luo, J. Liu, L. Du, W. Lv, L. Sun, Y. Li, Y. Wang and Y. Peng, J. Mater. Chem. C, 2016, 4, 815 DOI: 10.1039/C5TC03144C

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