Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells

Zhang Z, Duan C, Wang S, Xie T, Zou F, Luo Y, Tang R, Guo K, Yuan L, Zhang K, Wang Y, Qiu J, Yan K (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202412042

Abstract

Poor operational stability is a crucial factor limiting the further application of perovskite solar cells (PSCs). Organic semiconductor layers can be a powerful means for reinforcing interfaces and inhibiting ion migration. Herein, two hole-transporting molecules, pDPA-SFX and mDPA-SFX, are synthesized with tuned substituent connection sites. The meta-substituted mDPA-SFX results in a larger dipole moment, more ordered packing, and better charge mobility than pDPA-SFX, accompanying with strong interface bonding on perovskite surfaces and suppressed ion motion as well. Importantly, mDPA-SFX-based PSCs exhibit an efficiency that has significantly increased from 22.5 % to 24.8 % and a module-based efficiency of 19.26 % with an active area of 12.95 cm2. The corresponding cell retain 94.8 % of its initial efficiency at maximum power point tracking (MPPT) after 1,000 h (T95=1,000 h). The MPPT T80 lifetime is as long as 2,238 h. This work illustrates that a small degree of structural variation in organic compounds leaves considerable room for developing new HTMs for light stable PSCs.

Authors with CRIS profile

Kaicheng Zhang Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET)

Involved external institutions

South China University of Technology (SCUT) / 华南理工大学 CN China (CN) Taiyuan University of Technology CN China (CN) Beijing University of Chemical Technology CN China (CN) Shanghai Jiao Tong University / 上海交通大学 CN China (CN) Institute of Metal Research Chinese Academy of Sciences (IMR CAS) CN China (CN)

How to cite

APA:

Zhang, Z., Duan, C., Wang, S., Xie, T., Zou, F., Luo, Y.,... Yan, K. (2024). Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202412042

MLA:

Zhang, Zheng, et al. "Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells." Angewandte Chemie International Edition (2024).

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