Hybrid perovskite single crystals offer a great promise for optoelectronic devices, and patterning is broadly required in industrialized applications for functional purposes. However, established patterning techniques meet their limitations when it comes to hybrid perovskite single crystals with multilayered diode structures. In this work, an Ostwald ripening assisted photolithography (ORAP) patterning process, which employs wettability-assisted blade-coating and Ostwald ripening assisted crystallization, is developed for fabricating patterned perovskite single-crystal microarrays. Optoelectronic devices based on uniform perovskite single-crystal microarrays with a multilayered diode structure can be constructed through the ORAP process. To demonstrate the compatibility of the ORAP process with the manufacture of optoelectronic devices, patterned CH₃NH₃PbBr₃ single-crystal microarray solar cells, which show enhanced performance than solar cells based on CH₃NH₃PbBr₃ continuous single crystals reported, were fabricated. With the development of perovskite research, we are confident that the ORAP process opens a new avenue to fabricate optoelectronic devices based on perovskite microarrays.

中文翻译：

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用于高效光伏器件的钙钛矿单晶微阵列

钙钛矿杂化单晶为光电器件提供了广阔前景，出于功能目的，工业化应用中广泛要求进行图案形成。然而，当涉及具有多层二极管结构的混合钙钛矿单晶时，已建立的构图技术会遇到其局限性。在这项工作中，开发了一种奥斯特瓦尔德成熟辅助光刻（ORAP）图案化工艺，该工艺采用了可湿性辅助的刮刀涂层和奥斯特瓦尔德成熟化辅助的结晶工艺，用于制造图案化的钙钛矿单晶微阵列。可以通过ORAP工艺构建基于具有多层二极管结构的均匀钙钛矿单晶微阵列的光电器件。为了证明ORAP工艺与光电器件制造的兼容性，_{制作了3个}NH ₃ PbBr ₃单晶微阵列太阳能电池，该电池比基于CH ₃ NH ₃ PbBr ₃连续单晶的太阳能电池表现出更高的性能。随着钙钛矿研究的发展，我们相信ORAP工艺为基于钙钛矿微阵列的光电器件制造开辟了一条新途径。