钙钛矿材料在热载流子太阳能电池中的研究进展

Research Progress of Perovskite Materials in Hot Carrier Solar Cells

热载流子弛豫过程中的能量损失是限制太阳能电池器件效率进一步提升的主要因素。近年来,研究人员提出基于热载流子能量利用的光伏器件概念,旨在热载流子弛豫到能带边缘之前将其能量收集利用。相较于传统半导体,钙钛矿材料具有更缓慢的热载流子弛豫速率,具备实现热载流子太阳能电池的潜力。首先介绍了热载流子太阳能电池的主要结构,总结了钙钛矿材料在热载流子弛豫过程和有效提取方面的研究进展,并探讨了目前合适的热载流子提取材料,最后对钙钛矿材料在热载流子太阳能电池中的发展方向进行了展望。

The energy loss in the process of hot carrier relaxation is the main factor limiting the further improvement of the efficiency of solar cells.In recent years,researchers have proposed the concept of photovoltaic devices based on the energy utilization of hot carriers,aiming at collecting and utilizing the energy of hot carriers before they relax to the edge of the energy band.Compared with traditional semiconductors,perovskite materials have a slower hot carrier relaxation rate and have the potential to realize hot-carrier solar cells.This review first introduces the main structures of hot carrier solar cells,then summarizes the research progress of perovskite materials in the hot carrier relaxation process and effective extraction,and discusses the current suitable hot carrier extraction materials.Finally,the development direction of perovskite materials in hot carrier solar cells is prospected.