Mahmood Khalid, Khalid Arshi, Mehran Muhammad Taqi
Department of Chemical & Polymer Engineering, University of Engineering & Technology Lahore Faisalabad Campus, 3½ km Khurrianwala - Makkuana By-Pass Faisalabad Pakistan
Department of Humanities & Basic Sciences, University of Engineering & Technology Lahore Faisalabad Campus, 3½ km Khurrianwala - Makkuana By-Pass Faisalabad Pakistan.
Nanoscale Adv. 2018 Aug 17;1(1):64-70. doi: 10.1039/c8na00064f. eCollection 2019 Jan 15.
Methyl-ammonium lead iodide perovskite (MAPbI) was synthesized in the form of micro-needles a hydrothermal route at a low temperature of 100 °C in a two-step procedure for the first time. The results exhibit that the amount of the surfactant is crucial for the synthesis of the MAPbI nanostructures with well-controlled morphologies. In contrast to bulk MAPbI, the one-dimensional (1-D) micro-needle perovskite with a diameter of 200 nm showed an improved hole injection from the perovskite to the hole transporting layer (HTL), providing a unique platform at the perovskite/HTL interface. The best performing device employing MAPbI perovskite micro-needles yielded stable and hysteresis-free devices with a best power conversion efficiency of (PCE) of 17.98%. The current findings highlight the potential of perovskite micro-needles as novel absorber systems and lay the basis for future commercialization.
首次通过两步水热法在100°C的低温下合成了微针状的甲基铵碘化铅钙钛矿（MAPbI）。结果表明，表面活性剂的用量对于合成具有形态良好可控的MAPbI纳米结构至关重要。与块状MAPbI相比，直径为200nm的一维（1-D）微针状钙钛矿显示出从钙钛矿到空穴传输层（HTL）的空穴注入得到改善，在钙钛矿/HTL界面提供了一个独特的平台。采用MAPbI钙钛矿微针的性能最佳的器件产生了稳定且无滞后的器件，最佳功率转换效率（PCE）为17.98%。当前的研究结果突出了钙钛矿微针作为新型吸收体系统的潜力，并为未来的商业化奠定了基础。
