采用氰基管理的 23.2% 高效低带隙过氧化物太阳能电池

IF 32.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Energy & Environmental Science Pub Date : 2024-11-14 DOI:10.1039/d4ee03001j

Hashini Perera, Thomas Webb, Yuliang Xu, Jingwei Zhu, Yundong Zhou, Gustavo Trindade, Mateus Gallucci Masteghin, Steven P. Harvey, Sandra Jenatsch, Linjie Dai, Sanjayan Sathasivam, Tom Macdonald, Steven Hinder, Yunlong Zhao, Samuel D Stranks, Dewei Zhao, Wei Zhang, Imalka Jayawardena, Saif Ahmed Haque, S. Ravi P. Silva

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引用次数: 0

摘要

管理碘的形成对于实现高效稳定的过氧化物太阳能电池至关重要。聚(3,4-亚乙二氧基噻吩)聚苯乙烯磺酸盐（PEDOT:PSS）是一种广泛采用的空穴传输材料，尤其适用于包晶体太阳能电池（PSC）。然而，提高基于 PEDOT:PSS 的包晶体光电子学的性能和稳定性仍然是一个关键挑战。我们的研究表明，含胺有机阳离子会使 PEDOT:PSS 去掺杂，从而导致性能损失，而硫氰酸盐添加剂可部分弥补这种损失。然而，这是以牺牲器件稳定性为代价的，因为硫氰酸盐-碘相互作用会形成氰基，而在潮湿环境中会加速氰基的形成。为了减少这种降解途径，我们在铅锡 PSC 中加入了碘还原剂。由此产生的器件的功率转换效率提高了 23.2%，是已报道的铅锡 PSC 器件中最高的，而且在环境条件下的最大功率点跟踪条件下，TS80 的寿命提高了约 66%。这些发现为设计更高效、更稳定的下一代孔提取材料提供了启示。

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23.2% efficient low band gap perovskite solar cells with cyanogen management

Managing iodine formation is crucial for realising efficient and stable perovskite photovoltaics. Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is a widely adopted hole transport material, particularly for perovskite solar cells (PSCs). However, Improving the performance and stability of PEDOT:PSS based perovskite optoelectronics remains a key challenge. We show that amine-containing organic cations de-dope PEDOT:PSS, causing performance loss, which is partially recovered with thiocyanate additives. However, this comes at the expense of device stability due to cyanogen formation from thiocyanate-iodine interaction which is accelerated in the presence of moisture. To mitigate this degradation pathway, we incorporate an iodine reductant in lead-tin PSCs. The resulting devices show an improved power conversion efficiency of 23.2% which is among the highest reported for lead-tin PSCs, and ~66% enhancement for the T_S80 lifetime under maximum power point tracking in ambient conditions. These findings offer insights for designing next-generation hole extraction materials for more efficient and stable PSCs.

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来源期刊

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).