Spraying Perovskite Intermediate Enabling Inch‐Scale Microwire Film Fabrication for Integration Compatible Efficient‐Photodetectors Array
Abstract
Metal halide perovskite microwires (MWs) have emerged as promising photoactive materials for highly efficient photodetectors (PDs). However, large‐scale MWs film fabrication is still a formidable challenge for achieving integration compatible perovskite PDs arrays, owing to precipitation and structure crushing of MWs during deposition and annealing. Herein, a strategy of fabrication of inch‐scale perovskite MWs films is presented by depositing perovskite intermediate suspension through spray‐coating, which addresses the trade‐off present between the high flatness of MWs film and its large‐scale fabrication. The single crystalline perovskite MWs weave a film with high enough flatness rendering narrow performance distribution of high efficiency on the 7 × 7 PDs arrays. The formamidinium lead iodide (FAPbI 3) PDs arrays show average responsivity and detectivity of (1.60 ± 0.46) A W−1 and (1.49 ± 0.50) × 10 12 Jones. The methanaminium lead iodide (MAPbI 3) PDs arrays show average responsivity and detectivity of (0.065 ± 0.046) A W−1 and (2.54 ± 0.77) × 10 11 Jones. The champion PDs based on FAPbI 3 MWs film and MAPbI 3 MWs film show detectivity of 1.26 × 10 13 and 9.67 × 10 11 Jones, which are much higher than that of corresponding polycrystalline films and located on the top ranking of similar devices.
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Wang et al. developed a spray-coating strategy for fabricating inch-scale perovskite MW films, balancing flatness and scalability.
“Moreover, Wang et al. [125] developed a spray-coating strategy for fabricating inch-scale perovskite MW films, balancing flatness and scalability (Figure 5F).”
From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [125]
The films enable uniform performance across 7 × 7 photodetector arrays, with FAPbI3-based devices achieving a detectivity of up to 1.26 × 10^13 Jones and MAPbI3-based devices reaching 9.67 × 10^11 Jones, both outperforming polycrystalline counterparts and ranking among the best in class.
“The films enable uniform performance across 7 × 7 photodetector arrays, with FAPbI 3 -based devices achieving a detectivity of up to 1.26 × 10 13 Jones and MAPbI 3 -based devices reaching 9.67 × 10 11 Jones, both outperforming polycrystalline counterparts and ranking among the best in class.”
From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [125]
Cites
Perovskite Microdisk Microlasers Self‐Assembled from Solution
Liao, Q., Hu, K., Zhang, H., Wang, X., Yao, J., & Fu, H. (2015) · Advanced Materials · doi:10.1002/adma.201500449 · Cited by 406 · see citing works
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Design Strategies and Emerging Applications of Perovskite-Based Sensors
Li, Y., Ding, Y., Sun, J., Tan, S., Li, Y., Wang, X., Cai, J., Bai, J., Lv, X., Guo, W., et al. (2025) · SmartMat · doi:10.1002/smm2.70022 · Cited by 41 · see citing works
“Moreover, Wang et al. [125] developed a spray ‐ coating strategy for fabricating inch ‐ scale perov-skite MW films, balancing flatness and scalability (Figure 5F).”
- Authors
- Wang, H., Liu, P., Zhang, M., Han, B., Wang, G., Zhang, J., Hu, S., Li, H., Guo, Y., Zhao, G., Gao, J., Cheng, Z., & Wang, H.
- Affiliations
- Northwestern Polytechnical University (CN)
- Shaanxi University of Science and Technology (CN)
- Corresponding author
- Wang, Hongyue
- Wang, Hongqiang
- ORCID
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2022-11-27
- Volume
- 33
- Issue
- 6
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W4310278149
- Cited by
- 12
- References
- 1
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 3 · 2023: 1
- FWCI
- 0.62
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Functional Materials (publishedVersion)
- Funders
- National Natural Science Foundation of China (52011530432, 51902263, 51872240, 52172101)
- Natural Science Foundation of Shaanxi Province (2021ZDLGY14‐08)
- Fundamental Research Funds for the Central Universities (3102019JC005, G2022KY0603)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Perovskite Materials and Applications
- Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Semiconductor Detectors and Materials
- Keywords
- spray coating, photodetector arrays, FAPbI3, film flatness, large-area perovskite films, detectivity, responsivity
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