Surface integration modulated low-temperature synthesis for high-quality halide perovskite single crystals

IF 13.2 1区 工程技术 Q1 ENGINEERING, CHEMICAL Chemical Engineering Journal Pub Date : 2025-06-15 Epub Date: 2025-04-26 DOI:10.1016/j.cej.2025.163060
Shengqiao Zeng , Bin Xue , Bin Zhang , Bin Yang , Xiangfan Xie , Chuanyun Hao , Xingzhu Wang , Lihua Qian , Andrey A. Petrov , Guangda Niu , Wallace C.H. Choy , Shuang Xiao
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Abstract

Advancements in optoelectronic devices are largely contingent on the availability of superior-quality semiconductor materials, such as halide perovskites. However, quickly producing halide perovskite single crystals (SCs) often leads to compromised material properties hindering high-end applications. To address this challenge, we developed a refined crystal growth methodology, low-temperature inverse temperature crystallization (LITC), tailored to enhance the quality of perovskite SCs while maintaining a relatively fast growth rate. Taking the synthesis of methylammonium lead bromide (MAPbBr3) SCs as a model, isopropyl alcohol (IPA) was introduced into the precursors as an additive. The affinity of IPA for the crystal surface enables a modulated surface integration process and simultaneously impacts the charge of colloids within the precursor solutions to suppress undesirable nucleation. Thereafter, MAPbBr3 SCs can successfully grow under near-equilibrium conditions from 44 °C to 48 °C. Notably, a narrow full width at half maximum of 0.012° in the rocking curve of high-resolution X-ray diffraction was achieved, outperforming most inverse temperature crystallization (ITC) methods for SC synthesis. X-ray detectors fabricated with LITC SCs exhibited markedly improved performances. With meticulous surface integration control, this work advances the synthesis of high-quality perovskite SCs and paves the way for elevating the performance and durability of optoelectronic devices.
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表面集成调制低温合成高品质卤化物钙钛矿单晶
光电器件的进步很大程度上取决于高质量半导体材料的可用性,如卤化物钙钛矿。然而,快速生产卤化物钙钛矿单晶(SCs)往往导致材料性能受损,阻碍了高端应用。为了应对这一挑战,我们开发了一种改进的晶体生长方法,即低温逆温度结晶(LITC),旨在提高钙钛矿SCs的质量,同时保持相对较快的生长速度。以MAPbBr3 SCs的合成为模型,在前驱体中加入异丙醇(IPA)作为添加剂。IPA对晶体表面的亲和力使得表面集成过程被调制,同时影响前驱体溶液中胶体的电荷以抑制不希望的成核。此后,MAPbBr3 SCs可以在44 °C至48 °C的接近平衡条件下成功生长。值得注意的是,在高分辨率x射线衍射的摇摆曲线上实现了半宽0.012°的窄全宽,优于大多数反温度结晶(ITC)合成SC的方法。用LITC sc制备的x射线探测器表现出明显改善的性能。通过细致的表面集成控制,本工作推进了高质量钙钛矿SCs的合成,为提高光电器件的性能和耐用性铺平了道路。
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来源期刊
Chemical Engineering Journal
Chemical Engineering Journal 工程技术-工程:化工
CiteScore
21.70
自引率
9.30%
发文量
6781
审稿时长
2.4 months
期刊介绍: The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
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