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Article

Blast Nucleation Suppressed Growth of Large-Sized High-Quality CsPbBr3 Single Crystals for Photodetector Applications

by
Xinyu Sun
1,†,
Yuxia Yin
1,†,
Xiaolin Xia
2 and
Teng Zhang
1,*
1
Shan Dong Key Laboratory of Intelligent Energy Materials, School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
2
School of Information Science and Engineering, Qingdao Institute of Technology, Qingdao 266300, China
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Molecules 2025, 30(22), 4423; https://doi.org/10.3390/molecules30224423
Submission received: 28 July 2025 / Revised: 4 November 2025 / Accepted: 12 November 2025 / Published: 16 November 2025
(This article belongs to the Special Issue Chemistry Innovatives in Perovskite Based Materials)
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Abstract

During the growth of lead halide perovskite single crystals (SCs) with the conventional inverse temperature crystallization (ITC) method, the blast nucleation of the precursor under supersaturation conditions is always unavoidable. In the current study, three kinds of additives namely methanol (MOE), ethyl alcohol (EtOH), and polyethylene glycol (PEG) are introduced to regulate the growth of CsPbBr3 SCs. Benefiting from the strong anchoring hydroxy groups (-OH) with the Pb2+ species, large-sized CsPbBr3 crystals with reduced defect densities were prepared (PEG-regulated). In addition, the viscosity of the precursor solution increases after adding PEG additive, which provides a more stabilized environment for crystal growth. Finally, the photodetectors prepared from our PEG-tuned CsPbBr3 SCs show a responsivity of 2.25 A/W and a detectivity of 6.06 × 1011 Jones, demonstrating the potential of CsPbBr3 SCs for photo-detecting applications.
Keywords: perovskite photodetector; single crystal; suppressed blast nucleation; inverse temperature crystallization (ITC) method perovskite photodetector; single crystal; suppressed blast nucleation; inverse temperature crystallization (ITC) method

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MDPI and ACS Style

Sun, X.; Yin, Y.; Xia, X.; Zhang, T. Blast Nucleation Suppressed Growth of Large-Sized High-Quality CsPbBr3 Single Crystals for Photodetector Applications. Molecules 2025, 30, 4423. https://doi.org/10.3390/molecules30224423

AMA Style

Sun X, Yin Y, Xia X, Zhang T. Blast Nucleation Suppressed Growth of Large-Sized High-Quality CsPbBr3 Single Crystals for Photodetector Applications. Molecules. 2025; 30(22):4423. https://doi.org/10.3390/molecules30224423

Chicago/Turabian Style

Sun, Xinyu, Yuxia Yin, Xiaolin Xia, and Teng Zhang. 2025. "Blast Nucleation Suppressed Growth of Large-Sized High-Quality CsPbBr3 Single Crystals for Photodetector Applications" Molecules 30, no. 22: 4423. https://doi.org/10.3390/molecules30224423

APA Style

Sun, X., Yin, Y., Xia, X., & Zhang, T. (2025). Blast Nucleation Suppressed Growth of Large-Sized High-Quality CsPbBr3 Single Crystals for Photodetector Applications. Molecules, 30(22), 4423. https://doi.org/10.3390/molecules30224423

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