Halide perovskites are promising for a spectrum of energy applications including photovoltaics. Decisively characterizing microstructures of perovskites is critical yet challenging due to their soft characteristics. Recently, Rothmann et al. employed low-dose, low-angle annular dark-field scanning transmission electron microscopy to image perovskite thin films at the atomic scale, unveiling key structural details that are invisible to previous observations. This study opens the door to revealing microscopic structure-property-performance relationships in perovskites and beyond, guiding the reinvention and optimization of energy devices.

中文翻译：

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可视化钙钛矿中的隐形物

卤化物钙钛矿有望用于包括光伏在内的各种能源应用。决定性地表征钙钛矿的微观结构至关重要，但由于其柔软的特性而具有挑战性。最近，Rothmann等人。他采用低剂量，低角度的环形暗场扫描透射电子显微镜在原子尺度上对钙钛矿薄膜进行成像，揭示了以前观察不到的关键结构细节。这项研究为揭示钙钛矿及其以外的微观结构-性能-性能关系打开了大门，为能源设备的重新发明和优化提供了指导。