Recent Development of Organic-Inorganic Perovskite-Based Tandem Solar Cells

Abstract

Tandem cells are solar cells made of multiple junctions with tunable absorbing materials, which aim to overcome the Shockley–Queisser limit of single junction solar cells. Recently, organic–inorganic hybrid perovskite solar cells have stirred enormous interest as ideal candidates for tandem cells, due to high open circuit voltage, relatively wide optical bandgap, and low temperature solution processibility. So far, a great number of review papers have been focused on the development of a single junction, in the context of the investigation of operational principles, the materials growth/understanding, and interface engineering. Here, we have provided a summary of the recent developments in the realization and understanding of perovskite-based tandem cells. The optical simulations for the design of perovskite-based tandem cells are first presented in order to optimize the device architecture in theoretical perspective. Then, an overview of the recent progress in silicon–perovskite, perovskite–perovskite, and others–perovskite tandem cells is highlighted. Specifically, we will focus on the key issues for high efficiency tandem cells, e.g., transparent electrodes, intermediate layers, and bandgap engineering. Suggestions with respect to the further improvement toward perovskite tandem optoelectronics are discussed based on the available literature.