Improved comprehensive performance of CsPbI2Br perovskite solar cells by modifying the photoactive layers with carbon nanodots

Yanzhou Wang; Caidong Xie; Xincheng Yao; Qiulu Chen; Weining Liu; Yujun Fu; Qiming Liu; Junshuai Li; Yali Li; Deyan He

Journal of Materiomics (Mar 2022)

Improved comprehensive performance of CsPbI2Br perovskite solar cells by modifying the photoactive layers with carbon nanodots

Yanzhou Wang,
Caidong Xie,
Xincheng Yao,
Qiulu Chen,
Weining Liu,
Yujun Fu,
Qiming Liu,
Junshuai Li,
Yali Li,
Deyan He

Affiliations

Yanzhou Wang: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Caidong Xie: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Xincheng Yao: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Qiulu Chen: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Weining Liu: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Yujun Fu: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Qiming Liu: Corresponding author.; Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Junshuai Li: Corresponding author.; Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Yali Li: Corresponding author.; Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China
Deyan He: Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, And School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China

Journal volume & issue: Vol. 8, no. 2
pp. 358 – 365

Abstract

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Introducing additives into perovskite layers is an effective method to enhance the power conversion efficiency (PCE) and operation stability of perovskite solar cells (PSCs). Herein, we reported an addition of carbon nanodots (CNDs) into the CsPbI2Br photoactive layer to boost performance of the related PSCs. It is found that the trap density can be notably suppressed, and the crystallinity can be enhanced after introducing CNDs with an optimal quantity. The PSC with 1.0 wt% addition of CNDs delivers a notable improved average PCE of 13.77% (the highest PCE: 14.69%) from that of 12.14% for the control device without CND addition. Moreover, the CND-added CsPbI2Br PSCs exhibit superior stability, i.e., ∼86 % retention of the initial PCE after 160 h aging in air with the humidity of 20%–30%, to the control device.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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