Flexible and lightweight perovskite/Cu(In,Ga)Se2 tandem solar cells

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL Joule Pub Date : 2025-03-19 DOI:10.1016/j.joule.2024.11.011

Inyoung Jeong , Tae Kyung Lee , Hung Van Tran , Inchan Hwang , Jiseon Hwang , Ahreum Lee , Seungsik Ham , Huyen Tran , Yunae Cho , Donghyeop Shin , Soomin Song , Sangmin Lee , Seung Kyu Ahn , Young-Joo Eo , Ara Cho , Joo Hyung Park , Jun-Sik Cho , Junseop Byeon , Won Mok Kim , Jae Ho Yun , Kihwan Kim

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Abstract

Flexible perovskite/Cu(In,Ga)Se₂ (PVSK/CIGS) tandem solar cells (F-PCTSCs) can serve as lightweight and cost-effective power sources suitable for versatile applications; however, technical challenges impede their implementation. In this study, we adopted a straightforward lift-off process based on a polyimide (PI)-coated soda-lime glass (SLG) substrate for fabricating high-performance F-PCTSCs while addressing key technical challenges. The CIGS films grown on a PI-coated SLG substrate exhibited larger grains and higher carrier concentrations compared with their counterparts grown on bare SLG, as well as alleviated charge recombination. These enhancements were attributed to the suppression of alkali metal diffusion by the PI interlayer during the film growth, which resulted in superior device performance. Building on this approach, we fabricated efficient and lightweight F-PCTSCs that delivered a state-of-the-art power conversion efficiency of 23.64% (certified 22.8%) and high power-per-weight of 6.15 W g⁻¹, which is significantly greater than that of PVSK/silicon tandem solar cells (0.65 W g⁻¹).

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柔性和轻质钙钛矿/Cu(In,Ga)Se2串联太阳能电池

柔性过氧化物/铜铟镓硒（PVSK/CIGS）串联太阳能电池（F-PCTSCs）可作为适合多种应用的轻质、高性价比电源；然而，技术挑战阻碍了它们的实现。在本研究中，我们采用了一种基于聚酰亚胺（PI）涂层钠钙玻璃（SLG）衬底的直接掀离工艺来制造高性能 F-PCTSCs，同时解决了关键的技术难题。与在裸碱钙玻璃基板上生长的 CIGS 薄膜相比，在 PI 涂层 SLG 基板上生长的 CIGS 薄膜具有更大的晶粒和更高的载流子浓度，同时电荷重组现象也有所缓解。这些改进归因于 PI 夹层在薄膜生长过程中抑制了碱金属扩散，从而实现了卓越的器件性能。基于这种方法，我们制造出了高效、轻质的 F-PCTSCs，其功率转换效率达到 23.64%（认证值为 22.8%），单位重量功率高达 6.15 W g-1，大大高于 PVSK/硅串联太阳能电池（0.65 W g-1）。

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.