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Hole-transport material-free perovskite-based solar cells

Published online by Cambridge University Press:  07 August 2015

Lioz Etgar
Lioz Etgar*
Affiliation:
The Institute of Chemistry, The Hebrew University of Jerusalem, Israel; lioz.etgar@mail.huji.ac.il
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Abstract

Recent discoveries have revealed a breakthrough in the photovoltaics (PVs) field using organometallic perovskites as light harvesters in the solar cell. The organometal perovskite arrangement is self-assembled as alternate layers via a simple low-cost procedure. These organometal perovskites promise several benefits not provided by the separate constituents. This overview concentrates on implementing perovskites in PV cells such that the perovskite layers are used as the light harvester as well as the hole-conducting component. Eliminating hole-transport material (HTM) in this solar-cell structure avoids oxidation, reduces costs, and provides better stability and consistent results. Aspects of HTM-free perovskite solar cells discussed in this article include (1) depletion regions, (2) high voltages, (3) panchromatic responses, (4) chemical modifications, and (5) contacts in HTM-free perovskite solar cells. Elimination of HTM could expand possibilities to explore new interfaces in these solar cells, while over the long term, these uniquely structured HTM-free solar cells could offer valuable benefits for future PV and optoelectronics applications.

Keywords

Semiconductingsolution depositionelectronic structureoptical propertiesdevices
Type
Research Article
Information
MRS Bulletin , Volume 40 , Issue 8: Perovskite Photovoltaics , August 2015 , pp. 674 - 680
Copyright
Copyright © Materials Research Society 2015 

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