Edri Eran, Kirmayer Saar, Cahen David, Hodes Gary
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel.
J Phys Chem Lett. 2013 Mar 21;4(6):897-902. doi: 10.1021/jz400348q. Epub 2013 Mar 6.
Mesoscopic solar cells, based on solution-processed organic-inorganic perovskite absorbers, are a promising avenue for converting solar to electrical energy. We used solution-processed organic-inorganic lead halide perovskite absorbers, in conjunction with organic hole conductors, to form high voltage solar cells. There is a dire need for low-cost cells of this type, to drive electrochemical reactions or as the high photon energy cell in a system with spectral splitting. These perovskite materials, although spin-coated from solution, form highly crystalline materials. Their simple synthesis, along with high chemical versatility, allows tuning their electronic and optical properties. By judicious selection of the perovskite lead halide-based absorber, matching organic hole conductor, and contacts, a cell with a ∼ 1.3 V open circuit voltage was made. While further study is needed, this achievement provides a general guideline for additional improvement of cell performance.
基于溶液处理的有机-无机钙钛矿吸收体的介观太阳能电池，是将太阳能转化为电能的一条有前景的途径。我们使用溶液处理的有机-无机卤化铅钙钛矿吸收体，与有机空穴导体相结合，形成了高压太阳能电池。迫切需要这种低成本的电池，用于驱动电化学反应或作为光谱分裂系统中的高光子能量电池。这些钙钛矿材料虽然是从溶液中旋涂而成，但会形成高度结晶的材料。它们简单的合成方法以及高化学通用性，使得可以调节其电子和光学性质。通过明智地选择基于钙钛矿卤化铅的吸收体、匹配的有机空穴导体和接触材料，制造出了开路电压约为1.3 V的电池。虽然还需要进一步研究，但这一成果为进一步提高电池性能提供了总体指导方针。
