Issue 48, 2015

Hysteresis-free multi-walled carbon nanotube-based perovskite solar cells with a high fill factor

Abstract

Among the various perovskite solar cells, the carbon-based hole-transporter-free type is arguably the most promising for applications because of its low material/manufacturing cost, high efficiency and better long-term stability. However, the fill factor (FF) is typically below 0.75, limiting the cell performance. In this communication, through a comparison of systematic performance between the multi-walled carbon nanotube (MWCNT) and another two representative carbon materials, namely carbon black and graphite, we highlight two salient advantages of MWCNT-based devices: high FF and hysteresis-free performance. We owe the superior performance to the charge transport highway at the interface of MWCNT/perovskite. After preliminary optimization, we have achieved a PCE of 12.67% with a very impressive FF of 0.80, which is among the highest for carbon-based perovskite solar cells.

Graphical abstract: Hysteresis-free multi-walled carbon nanotube-based perovskite solar cells with a high fill factor

Supplementary files

Article information

Article type
Communication
Submitted
25 Sep 2015
Accepted
02 Nov 2015
First published
04 Nov 2015

J. Mater. Chem. A, 2015,3, 24226-24231

Author version available

Hysteresis-free multi-walled carbon nanotube-based perovskite solar cells with a high fill factor

Z. Wei, H. Chen, K. Yan, X. Zheng and S. Yang, J. Mater. Chem. A, 2015, 3, 24226 DOI: 10.1039/C5TA07714A

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