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Realizing CsPbBr3 Light-Emitting Diode Arrays Based on PDMS Template Confined Solution Growth of Single-Crystalline Perovskite.
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2020-09-17 , DOI: 10.1021/acs.jpclett.0c02560 Sijia Li 1 , Huaiyi Ding 1, 2 , Hongbing Cai 1 , Hui Zhao 1 , Yilong Zhao 3 , Jinlong Yang 3 , Yan Jin 3 , Nan Pan 1, 2, 4 , Xiaoping Wang 1, 2, 3, 4
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2020-09-17 , DOI: 10.1021/acs.jpclett.0c02560 Sijia Li 1 , Huaiyi Ding 1, 2 , Hongbing Cai 1 , Hui Zhao 1 , Yilong Zhao 3 , Jinlong Yang 3 , Yan Jin 3 , Nan Pan 1, 2, 4 , Xiaoping Wang 1, 2, 3, 4
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Metal-halide perovskites have shown excellent optoelectronic properties, among which the array-type architecture is highly desirable. However, both the susceptibility of perovskites to polar solvents and the complex 3D geometry of array structure have led to great challenges for device fabrication and performance, which hinders their further applications. Here, we report a simple but efficient approach highly compatible with the state-of-the-art microelectronics processes to construct single-crystalline array light-emitting diodes (LEDs) of perovskite. The well-aligned single-crystalline array was sandwiched as the emission layer, among the carefully designed multilayer ITO/NiO/CsPbBr3/PMMA/ZnO/Ag structure. Through systematically altering the size of CsPbBr3 single crystal and the thickness of insulation layer, the device performance has been optimized and eventually achieved a 99% working ratio in a 62 × 47 array. Moreover, a prototype device of LED display was also fabricated. These results clearly demonstrate that our strategy is efficient, reliable, and versatile, which can be easily extended to other perovskites.
中文翻译：
基于PDMS模板的CsPbBr3发光二极管阵列的实现限制了单晶钙钛矿的溶液生长。
金属卤化物钙钛矿显示出优异的光电性能，其中非常需要阵列型结构。然而，钙钛矿对极性溶剂的敏感性以及阵列结构的复杂3D几何形状都给器件制造和性能带来了巨大挑战，这阻碍了它们的进一步应用。在这里，我们报告了一种简单而有效的方法，该方法与最新的微电子工艺高度兼容，可用于构造钙钛矿的单晶阵列发光二极管（LED）。在精心设计的多层ITO / NiO / CsPbBr 3 / PMMA / ZnO / Ag结构中，将取向良好的单晶阵列夹在中间作为发射层。通过系统地改变CsPbBr 3的大小由于单晶和绝缘层的厚度，器件性能得到了优化，最终在62×47阵列中达到了99％的工作效率。此外，还制造了LED显示器的原型装置。这些结果清楚地表明，我们的策略高效，可靠且用途广泛，可以轻松地扩展到其他钙钛矿。
更新日期：2020-10-02
中文翻译：
基于PDMS模板的CsPbBr3发光二极管阵列的实现限制了单晶钙钛矿的溶液生长。
金属卤化物钙钛矿显示出优异的光电性能，其中非常需要阵列型结构。然而，钙钛矿对极性溶剂的敏感性以及阵列结构的复杂3D几何形状都给器件制造和性能带来了巨大挑战，这阻碍了它们的进一步应用。在这里，我们报告了一种简单而有效的方法，该方法与最新的微电子工艺高度兼容，可用于构造钙钛矿的单晶阵列发光二极管（LED）。在精心设计的多层ITO / NiO / CsPbBr 3 / PMMA / ZnO / Ag结构中，将取向良好的单晶阵列夹在中间作为发射层。通过系统地改变CsPbBr 3的大小由于单晶和绝缘层的厚度，器件性能得到了优化，最终在62×47阵列中达到了99％的工作效率。此外，还制造了LED显示器的原型装置。这些结果清楚地表明，我们的策略高效，可靠且用途广泛，可以轻松地扩展到其他钙钛矿。
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