標題: Seeded Space-Limited Crystallization of CH3NH3PbI3 Single-Crystal Plates for Perovskite Solar Cells
作者: Yue, Hong-Lin
Sung, Hsin-Hung
Chen, Fang-Chung
光電工程學系
Department of Photonics
關鍵字: crystallization;perovskites;photovoltaics;single crystals
公開日期: 1-七月-2018
摘要: The synthesis of certain perovskite single crystals (SCs), including CH3NH3PbI3, through asymmetric crystallization is difficult, mainly because of the large difference in solubility of the precursors and/or the intrinsic nonpreference for growth in a direction along the substrate. Herein, an effective method is reported, seeded space-limited inverse-temperature crystallization (SSLITC), for growing CH3NH3PbI3 SC plates having micrometer-scale diameters. In this process, a seed CH3NH3PbI3 crystal is incorporated within a confined space to promote crystallization. Crystal plates having lateral dimensions of up to 2 mm are grown successfully. These SCs and a polymer conductive glue to fabricate perovskite solar cells on flexible substrates are used. One such device exhibits a maximum external quantum efficiency of 96%, a high photocurrent of 22 mA cm(-2), and a power conversion efficiency of greater than 4%. In addition, a device prepared without any encapsulation exhibits reasonable stability, suggesting a promising future for SC-based perovskite solar cells. It is anticipated that the SSLITC method proposed herein could open up new avenues for synthesizing various types of organic/inorganic perovskite SCs for applications in modern electronics.
URI: http://dx.doi.org/10.1002/aelm.201700655
http://hdl.handle.net/11536/145228
ISSN: 2199-160X
DOI: 10.1002/aelm.201700655
期刊: ADVANCED ELECTRONIC MATERIALS
Volume: 4
顯示於類別:期刊論文