Nickel polyelectrolytes as hole transporting materials for organic and perovskite solar cell applications†

IF 3.2 Q2 CHEMISTRY, PHYSICAL
Energy advances Pub Date : 2024-05-27 DOI:10.1039/D4YA00081A
Jin Hee Lee, Kausar Ali Khawaja, Faiza Shoukat, Yeasin Khan, Do Hui Kim, Shinuk Cho, Bright Walker and Jung Hwa Seo
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Abstract

Engineering interfacial materials for use between the active layer and the electrodes in organic and perovskite solar cells is one of the most effective ways to increase device efficiency. Despite decades of development, new materials continue to emerge offering improved performance and streamlined fabrication of devices. Here, a hole transport layer (HTL) for organic and perovskite solar cells combining poly(styrene sulfonate) (PSS) and nickel (Ni2+) is presented. P-type carriers and p-doping at the anode are stabilized by the PSS backbone's negatively charged state. The impact of ionic moieties on the electronic band structure and characteristics of organic and perovskite solar cells must be understood. The combination of Nickel(II): poly(styrene sulfonate) (Ni:PSS) and poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) can improve efficiency to 15.67% (perovskite solar cell) and 16.90% (organic solar cell) over traditional Ni:PSS and PEDOT:PSS. Ultraviolet photoelectron spectroscopic observations at HTL/donor interfaces indicate energy level alignment, which is the cause of various changes in device performance. Low ionization potential (IP) and hole injection barrier (ϕh) are essential at the HTL/donor interface for effective charge extraction in organic and perovskite solar cells.

Abstract Image

将镍多电解质作为有机和包光体太阳能电池应用的空穴传输材料
在有机太阳能电池和过氧化物太阳能电池的活性层和电极之间使用界面材料是提高设备效率的最有效方法之一。尽管经过几十年的发展,新材料仍在不断涌现,从而提高了性能并简化了设备的制造,但人们对离子分子对有机和包光体太阳能电池的电子带结构和特性的影响仍不完全了解。本文介绍了结合聚苯乙烯磺酸盐(PSS)和镍(Ni2+)的有机和包光体太阳能电池空穴传输层(HTL)。阳极的 P 型载流子和 p 型掺杂稳定了 PSS 骨架的负电荷状态。镍 (II):聚苯乙烯磺酸盐(Ni:PSS)和聚(3,4-亚乙二氧基噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)的组合可将效率提高到 15.67%(过氧化物太阳能电池)和 16.90%(有机太阳能电池);与单组分的 Ni:PSS 和 PEDOT:PSS HTL 相比有显著提高。在 HTL/供体界面上进行的紫外光电子能谱观测揭示了能级排列,这导致了器件性能的各种变化。低电离势(IP)和空穴注入势垒(jh)对 HTL/载体界面在有机和过氧化物太阳能电池中有效提取电荷至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
1.80
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