I′m so excitonic! A process to form MAPbBr₃ perovskite nanoparticle (NP) films formation directly on substrate surface through one-step in situ deposition method is described, avoiding the pitfalls of forming thin films from preformed NPs. Partial substitution of the MABr with OABr regulates the NP growth rate. The NPs film is highly luminescent (photoluminescence quantum yield=20.4 %) and displays an excitonic emission signature.

中文翻译：

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通过一步合成钙钛矿纳米粒子的发光二极管调制激子复合效应。

我好兴奋！描述了一种通过一步原位沉积方法直接在衬底表面上形成MAPbBr ₃钙钛矿纳米颗粒（NP）膜的方法，避免了从预先形成的NP形成薄膜的陷阱。用OABr部分取代MABr可以调节NP的生长速度。NPs薄膜具有高发光性（光致发光量子产率= 20.4％），并显示出激子发射信号。