Perovskite-based transparent pn junction in CuI/SrTiO3 toward enhanced photoelectric response <i>via</i> interfacial homogeneous perovskite LaCoO3 transition layer

A transparent pn junction comprising CuI/LaCoO3 QDs/SrTiO3 was synthesized using the solgel-hydrothermal-freeze drying-sputtering in situ iodization method. The CuI/LaCoO3 QDs/SrTiO3 pn junction achieves transmittance of ∼85%, photoelectric enhancement of ∼2.2 × 103-fold to the intrinsic CuI/SrTiO3, and good stability in 5 months. It can be primarily attributed to the LaCoO3 QDs. In addition to appropriate Fermi level and high QY, the LaCoO3 QDs with carrier inducing–injecting–driving can ameliorate the carrier dynamics for PCE-transparency balance, meanwhile increasing the hole by Cu vacancy. Furthermore, the CuI, LaCoO3, and SrTiO3 can maintain good structural stability for potential photoelectric devices.

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Publication Details

Journal
Applied Physics Letters
Published
2025-03-01
DOI
https://doi.org/10.1063/5.0257682
Citations
21
Primary Topic
Electronic and Structural Properties of Oxides
Type
article
Field-Weighted Citation Impact
10.87

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article

Perovskite-based transparent pn junction in CuI/SrTiO3 toward enhanced photoelectric response via interfacial homogeneous perovskite LaCoO3 transition layer

Zefeng Cai, Yang Wei, Jiaqi Pan, Jun Cao et al.
21 citations
Applied Physics Letters
Electronic and Structural Properties of Oxides
10.87
article

Perovskite-based transparent pn junction in CuI/SrTiO3 toward enhanced photoelectric response via interfacial homogeneous perovskite LaCoO3 transition layer

Zefeng Cai, Yang Wei, Jiaqi Pan, Jun Cao, Lei Shi, Chaorong Li, Zhiguo Zhao, Xinyan Lv
article en
21 citations

Abstract

A transparent pn junction comprising CuI/LaCoO3 QDs/SrTiO3 was synthesized using the solgel-hydrothermal-freeze drying-sputtering in situ iodization method. The CuI/LaCoO3 QDs/SrTiO3 pn junction achieves transmittance of ∼85%, photoelectric enhancement of ∼2.2 × 103-fold to the intrinsic CuI/SrTiO3, and good stability in 5 months. It can be primarily attributed to the LaCoO3 QDs. In addition to appropriate Fermi level and high QY, the LaCoO3 QDs with carrier inducing–injecting–driving can ameliorate the carrier dynamics for PCE-transparency balance, meanwhile increasing the hole by Cu vacancy. Furthermore, the CuI, LaCoO3, and SrTiO3 can maintain good structural stability for potential photoelectric devices.

Applied Physics LettersVol. 126(9)
Zhejiang Sci-Tech University (CN), Huaneng Clean Energy Research Institute (CN), Anhui East China Institute of Optoelectronic Technology (China) (CN)
National Natural Science Foundation of China, Natural Science Foundation of Zhejiang Province
Openalex Percentile: Top 1%
Electronic and Structural Properties of Oxides
10.87
DOISourceOpenAlex
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Perovskite-based transparent pn junction in CuI/SrTiO3 toward enhanced photoelectric response <i>via</i> interfacial homogeneous perovskite LaCoO3 transition layer — Zefeng Cai, Yang Wei, et al. · Applied Physics Letters (2025) | TGRS Research Map | TGRS