Luminescent, Wide-Band Gap Solar Cells with a Photovoltage up to 1.75 V through a Heterostructured Light-Absorbing Layer.

The development of photovoltaic devices with a high output voltage offers great opportunities for emerging internet of things (IoT) sensors and low-power-consumption electronics. However, the photovoltage of solar cells is yet to satisfy the requirement of driving voltage for most applications. Here, we demonstrate a wide-band gap CsPbBr-based solar cell with a heterostructured light absorber based on amino acid-modulated CsPbBr and CdSe quantum dots (QDs).

Introducing Ion Migration and Light-Induced Secondary Ion Redistribution for Phase-Stable and High-Efficiency Inorganic Perovskite Solar Cells.

Inorganic halide perovskites have been demonstrated as a promising alternative for light absorption because of their improved thermal stability compared with organic-inorganic halide perovskites. However, low power conversion efficiency and phase instability are major hindrances to their application. Here, a straightforward approach, by adding a layer of CsBr on the top of CsPbI, is reported for high-efficiency and phase-stable CsPbI-based solar cells.