Suppressing Nonradiative Losses in Wide-Band-Gap Perovskites Affords Efficient and Printable All-Perovskite Tandem Solar Cells with a Metal-Free Charge Recombination Layer

Zhou X, Lai H, Huang T, Chen C, Xu Z, Yang Y, Wu S, Xiao X, Chen L, Brabec C, Mai Y, Guo F (2023)

Publication Type: Journal article

Publication year: 2023

Journal

ACS Energy Letters American Chemical Society

Book Volume: 8

Pages Range: 502-512

Journal Issue: 1

DOI: 10.1021/acsenergylett.2c02156

Abstract

Although the efficiencies of all-perovskite tandem solar cells have surpassed 26%, further advancement of device performance is constrained by the large photovoltage deficit in wide-band-gap perovskite subcells. Meanwhile, state-of-the-art charge recombination layers incorporate an additional thin metal film (Au or Ag), which not only complexes device fabrication but induces parasitic optical losses. Here, we first fabricate efficient wide-band-gap perovskite solar cells (PSCs) with by suppressing nonradiative losses both in bulk material and at interface. The prepared PSCs with a band gap of 1.71 eV yield an impressive open-circuit voltage (VOC) of 1.27 V, giving a small VOC deficit of 0.44 V and an efficiency of 20.8%. We then fabricate monolithic all-printed perovskite tandem devices by constructing a metal-free recombination layer, which yields an efficiency of 23.65% and a high VOC of 2.05 V. This work offers a simple yet effective charge recombination architecture for advancing the performance of all-perovskite tandem devices.

Authors with CRIS profile

Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Jinan University CN China (CN) Guangzhou Institute of Energy Conversion (GIEC) CN China (CN) Hunan University / Húnán Dàxué CN China (CN)

How to cite

APA:

Zhou, X., Lai, H., Huang, T., Chen, C., Xu, Z., Yang, Y.,... Guo, F. (2023). Suppressing Nonradiative Losses in Wide-Band-Gap Perovskites Affords Efficient and Printable All-Perovskite Tandem Solar Cells with a Metal-Free Charge Recombination Layer. ACS Energy Letters, 8(1), 502-512. https://doi.org/10.1021/acsenergylett.2c02156

MLA:

Zhou, Xinming, et al. "Suppressing Nonradiative Losses in Wide-Band-Gap Perovskites Affords Efficient and Printable All-Perovskite Tandem Solar Cells with a Metal-Free Charge Recombination Layer." ACS Energy Letters 8.1 (2023): 502-512.

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