Perovskite-based materials have attracted considerable attention in photoelectric devices. In this paper, we report the one-step fabrication of spin-coated CsPbBr2.5I0.5 perovskite films doped with PAN (polyacrylonitrile) polymer. A red perovskite LED (PeLED) composite film was fabricated which featured a maximum luminance value of 657 cd/m2 at 8 V. We fabricated white PeLEDs by combining hole transporting layer material emission, perovskite–polymer composite material PAN:CsPbBr2.5I0.5, and pure inorganic perovskite CsPbBr3 as a luminescent layer. The maximum luminance of the device was 360 cd/m2 at 7 V, and the color coordinate was (0.31, 0.36). We obtained an ideal white light-emitting device that paves the way for further development of white PeLEDs.
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机译：钙钛矿基材料在光电器件中引起了相当大的关注。在本文中，我们报告了掺杂PAN（聚丙烯腈）聚合物的旋涂CsPbBr2.5I0.5钙钛矿薄膜的一步制备。制备了一种红色钙钛矿LED（PeLED）复合膜，其在8 V下的最大亮度值为657 cd / m 2 。我们通过结合空穴传输层材料的发射，钙钛矿-聚合物复合材料来制备白色PeLED材料PAN：CsPbBr2.5I0.5，以及纯无机钙钛矿CsPbBr3作为发光层。器件在7 V时的最大亮度为360 cd / m 2 ，色坐标为（0.31、0.36）。我们获得了理想的白色发光器件，为进一步开发白色PeLED铺平了道路。
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