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Issue 12, 2013
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Self-powered flexible and transparent photovoltaic detectors based on CdSe nanobelt/graphene Schottky junctions

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Abstract

Flexible and transparent electronic and optoelectronic devices have attracted more and more research interest due to their potential applications in developing portable, wearable, low-cost, and implantable devices. We have fabricated and studied high-performance flexible and transparent CdSe nanobelt (NB)/graphene Schottky junction self-powered photovoltaic detectors for the first time. Under 633 nm light illumination, typical photosensitivity and responsivity of the devices are about 1.2 × 105 and 8.7 A W−1, respectively. Under 3500 Hz switching frequency, the response and recovery times of them are about 70 and 137 μs, respectively, which, to the best of our knowledge, are the best reported values for nanomaterial based Schottky junction photodetectors up to date. The detailed properties of the photodetectors, such as the influences of incident light wavelength and light intensity on the external quantum efficiency and speed, are also investigated. Detailed discussions are made in order to understand the observed phenomena. Our work demonstrates that the self-powered flexible and transparent CdSe NB/graphene Schottky junction photovoltaic detectors have a bright application prospect.

Graphical abstract: Self-powered flexible and transparent photovoltaic detectors based on CdSe nanobelt/graphene Schottky junctions

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Publication details

The article was received on 29 Dec 2012, accepted on 14 Apr 2013 and first published on 22 Apr 2013


Article type: Paper
DOI: 10.1039/C3NR34335A
Nanoscale, 2013,5, 5576-5581

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    Self-powered flexible and transparent photovoltaic detectors based on CdSe nanobelt/graphene Schottky junctions

    Z. Gao, W. Jin, Y. Zhou, Y. Dai, B. Yu, C. Liu, W. Xu, Y. Li, H. Peng, Z. Liu and L. Dai, Nanoscale, 2013, 5, 5576
    DOI: 10.1039/C3NR34335A

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