Carbon nanotubes as hole-selective contacts for high-efficiency full-area GaAs hybrid heterojunction solar cells†

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materials Chemistry A Pub Date : 2024-09-28 DOI:10.1039/D4TA05391E

Youtian Mo, Chaoying Guo, Jiansen Guo, Peixin Liu, Xuan Wang, Yufan Cai, Jiaying Chen, Xi Deng, Wenliang Wang and Guoqiang Li

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Abstract

Organic hybrid heterojunction solar cells (HJSCs) based on PEDOT:PSS have attracted significant attention due to their excellent photovoltaic performance. However, the complex carrier transport layer, intricate cell fabrication processes and their high-cost are not proportional to the optimization of cell performance. In this work, we demonstrated a facile annealing process lasting only a few seconds to prepare a high-performance Nafion/PEDOT:PSS (NP) hole transport layer (HTL) and its GaAs hybrid heterojunction. By introducing Nafion, the GaAs/NP HJSC achieves a competitive power conversion efficiency (PCE) of 15.77% thanks to the improved wettability, conductivity and carrier mobility of the HTL. Additionally, a thin and transparent carbon nanotube (CNT) film was introduced as the top electrode for the full-area GaAs/NP hybrid HJSC. The novel design of the NP HTL and full-area light absorption open a new avenue for the widespread application of heterojunction photovoltaic technologies.

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碳纳米管作为高效全面积砷化镓混合异质结太阳能电池的空穴选择性触点

基于 PEDOT:PSS 的有机混合异质结太阳能电池（HJSC）因其卓越的光伏性能而受到广泛关注。然而，复杂的载流子传输层、复杂的电池制造工艺及其高昂的成本与电池性能的优化并不相称。在这项工作中，我们展示了一种仅需几秒钟的简便退火工艺，用于制备高性能的 Nafion/PEDOT:PSS (NP) 空穴传输层（HTL）及其 GaAs 混合光电结。引入 Nafion 后，由于 HTL 的润湿性、导电性和载流子迁移率得到改善，GaAs/NP HJSC 的 PCE 达到了 15.77% 的竞争性水平。此外，全面积砷化镓/氮化镓混合 HJSC 的顶部电极采用了纤细透明的碳纳米管 (CNT)。NP HTL 的新颖设计和全面积光吸收为异质结光伏技术的广泛应用开辟了一条新途径。

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来源期刊

Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

19.50

自引率

5.00%

发文量

1892

审稿时长

1.5 months

期刊介绍： The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.