Issue 20, 2017

Ultrahigh, ultrafast and large response size visible-near-infrared optical position sensitive detectors based on CIGS structures

Abstract

CIGS-based heterostructures have been demonstrated to achieve superior high absorption and photovoltaic effects theoretically and experimentally, making them extremely attractive for realizing optoelectronic devices. However, the applications of CIGS are mainly focused on solar cells. In this work, the lateral photovoltaic effect (LPE) is firstly observed in the CIGS film with a glass/Mo/CIGS/CdS/ZnO/ITO structure, indicating its great potential for application in position sensitive detectors (PSDs). LPE measurements reveal that this structured PSD exhibits ultrahigh sensitivity and excellent linearity even to a very large working distance of 28 mm in the visible-near-infrared range with the position sensitivity up to 431.6 mV mm−1. Notably, the detector shows ultrafast response speed with a rise time of 8.3 μs and a fall time of 7.7 μs, and capability to work stably under air conditions for a very long time. The unprecedented performance could be attributed to the good quality of this CIGS structure, as well as the unique optical properties of the CIGS layer and the excellent conductivity of the ITO layer. These findings suggest that the glass/Mo/CIGS/CdS/ZnO/ITO structure has great potential for application in the field of visible-near-infrared optical position sensitive detection and might be used as elements for the construction of high-speed integrated optoelectronic sensor circuitry.

Graphical abstract: Ultrahigh, ultrafast and large response size visible-near-infrared optical position sensitive detectors based on CIGS structures

Supplementary files

Article information

Article type
Paper
Submitted
06 Apr 2017
Accepted
20 Apr 2017
First published
20 Apr 2017

J. Mater. Chem. C, 2017,5, 4915-4922

Ultrahigh, ultrafast and large response size visible-near-infrared optical position sensitive detectors based on CIGS structures

S. Qiao, K. Feng, Z. Li, G. Fu and S. Wang, J. Mater. Chem. C, 2017, 5, 4915 DOI: 10.1039/C7TC01462G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements