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Self‐Assembled Perovskite Nanoislands
In article number 2105542, Jung‐Ho Yun, Jae Sung Yun, Lianzhou Wang, and co‐workers report an energetic surface engineering strategy to restructure non‐uniform CH3NH3PbI3 perovskite crystal surfaces. By thermally evaporating energetic CsI on single crystal surfaces, a unique nano‐island structure is formed through a cation interdiffusion process. This morphology...
Organometal perovskite single crystals have been recognized as a promising platform for high‐performance optoelectronic devices, featuring high crystallinity and stability. However, a high trap density and structural nonuniformity at the surface have been major barriers to the progress of single crystal‐based optoelectronic devices. Here, the formation of a unique nanoisland structure is reported...
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