Cadmium‐Doping Slows Trap Emptying in Ambient‐Air Blade‐Coated Formamidinium Lead Iodide Perovskite Solar Cells

Author:

Zhang Dongyang1,Khasnabis Sutripto2,Wang Wanlong3,Yeddu Vishal1,Moradi Shahram4,Awais Muhammad4,Nguyen Hai‐Dang1,Reinecke Sean B.1,Haruta Yuki1,Godin Robert25,Tan Furui3,Saidaminov Makhsud I.146ORCID

Affiliation:

1. Department of Chemistry University of Victoria Victoria British Columbia V8P 5C2 Canada

2. Department of Chemistry The University of British Columbia Kelowna British Columbia V1V 1V7 Canada

3. Laboratory of Photovoltaic Materials Henan University Kaifeng Henan 475004 P. R. China

4. Department of Electrical and Computer Engineering University of Victoria Victoria British Columbia V8P 5C2 Canada

5. Clean Energy Research Center University of British Columbia 2360 East Mall Vancouver British Columbia V6T 1Z3 Canada

6. Centre for Advanced Materials and Related Technologies (CAMTEC) University of Victoria Victoria British Columbia V8P 5C2 Canada

Abstract

AbstractFormamidinium lead iodide (FAPbI3) in its α‐phase is among the most desirable perovskite compositions for solar cells. However, because of its transition into the yellow δ‐phase at room temperature, it is a challenge to process it in ambient air by scalable fabrication methods. Here the introduction of a trace amount of cadmium (in the form of CdI2) to FAPbI3 is reported and found that it enhances the stability of the perovskite's black α‐phase polymorph, inhibits non‐radiative recombination events, leads to pin‐hole free compact surface morphology, and improves band energy alignment. The 0.6% Cd‐doped FAPbI3 solar cells show a champion efficiency of 22.7% for 0.049 cm2 and 16.4% for cm2‐scale pixels, which, to the best of the knowledge, are among the highest for air‐ambient fully blade‐coated pure FAPbI3 solar cells with an n‐i‐p architecture. Transient absorption microscopy measurements reveal that Cd doping reduces the number of trapped charges and increases their lifetimes, promoting charge accumulation and a higher photovoltage. The study sheds light on the potential of cadmium as a homovalent dopant for the stabilization and performance enhancement of FAPbI3 performance solar cells.

Funder

Canada Foundation for Innovation

Canada Research Chairs

Natural Sciences and Engineering Research Council of Canada

Japan Society for the Promotion of Science

China Scholarship Council

Publisher

Wiley

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3