All-inorganic CsPbI2Br perovskite solar cells with thermal stability at 250 °C and moisture-resilience via polymeric protection layers†

IF 32.4 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Rajarshi Roy, Mahdi Malekshahi Byranvand, Mohamed Reza Zohdi, Theresa Magorian Friedlmeier, Chittaranjan Das, Wolfram Hempel, Weiwei Zuo, Mayank Kedia, Jose Jeronimo Rendon, Stephan Boehringer, Bekele Hailegnanw, Michael Vorochta, Sascha Mehl, Monika Rai, Ashish Kulkarni, Sanjay Mathur and Michael Saliba
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Abstract

All-inorganic perovskites, such as CsPbI2Br, have emerged as promising compositions due to their enhanced thermal stability. However, they face significant challenges due to their susceptibility to humidity. In this work, CsPbI2Br perovskite is treated with poly(3-hexylthiophen-2,5-diyl) (P3HT) during the crystallization resulting in significant stability improvements against thermal, moisture and steady-state operation stressors. The perovskite solar cell retains ∼90% of the initial efficiency under relative humidity (RH) at ∼60% for 30 min, which is among the most stable all-inorganic perovskite devices to date under such harsh conditions. Furthermore, the P3HT treatment ensures high thermal stress tolerance at 250 °C for over 5 h. In addition to the stability enhancements, the champion P3HT-treated device shows a higher power conversion efficiency (PCE) of 13.5% compared to 12.7% (reference) with the stabilized power output (SPO) for 300 s. In addition, the P3HT-protected perovskite layer in ambient conditions shows ∼75% of the initial efficiency compared to the unprotected devices with ∼28% of their initial efficiency after 7 days of shelf life.

Abstract Image

全无机CsPbI2Br钙钛矿太阳能电池在250°C下的热稳定性和通过聚合物保护层的防潮性
全无机钙钛矿,如CsPbI2Br,由于其增强的热稳定性而成为有前途的成分。然而,由于它们对湿度的敏感性,它们面临着巨大的挑战。在这项工作中,CsPbI2Br钙钛矿在结晶过程中使用聚(3-己基噻吩-2,5-二基)(P3HT)处理,从而显著提高了CsPbI2Br钙钛矿对热、湿和稳态操作应力的稳定性。钙钛矿太阳能电池在相对湿度(RH)为~60%的条件下保持约90%的初始效率30分钟,是迄今为止在这种恶劣条件下最稳定的全无机钙钛矿器件之一。此外,P3HT处理确保了在250°C下超过5小时的高热应力耐久性。除了稳定性增强之外,冠军P3HT处理的器件在300 s稳定功率输出(SPO)下显示出更高的功率转换效率(PCE),为13.5%,高于12.7%(参考)。此外,在环境条件下,p3ht保护的钙钛矿层在7天的保质期内显示出约75%的初始pce,而未保护的PSCs显示出约28%的初始pce。
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来源期刊
Energy & Environmental Science
Energy & Environmental Science 化学-工程:化工
CiteScore
50.50
自引率
2.20%
发文量
349
审稿时长
2.2 months
期刊介绍: Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).
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