Perovskite solar cells have achieved rapid progress in the new‐generation photovoltaic
field, but the commercialization lags behind owing to the device stability issue under …

Abstract Wide-bandgap (WBG) mixed-halide perovskites show promise of realizing efficient
tandem solar cells but at present suffer from large open-circuit voltage loss and the …

Owing to their low cost, high efficiency, property tunability, and flexibility, metal halide
perovskites (MHPs) show great promise in next-generation optoelectronics, including …

We study recombination pathways in halide perovskite solar cells using a semiconductor
device model that includes iodide diffusion and iodide reactions. We stress the device at a …

Photostability is critical for long-term solar cell operation. While light-triggered defects are
usually reported as evidence of material degradation, we reveal that the formation of certain …

Among many riddles posed by halide perovskites, the surprising apparent near-absence of
harmful defects stands out. This is commonly explained by invoking defect tolerance (DT) …

In crystalline and amorphous semiconductors, the temperature-dependent Urbach energy
can be determined from the inverse slope of the logarithm of the absorption spectrum and …

Ion migration is a broad term used to account for the degradation of halide perovskite
materials and devices. However, ion mobility is only one piece of the full picture─ mobile …

Radiation‐resistant but cost‐efficient, flexible, and ultralight solar sheets with high specific
power (W g− 1) are the “holy grail” of the new space revolution, powering private space …

The interaction of free carriers with defects and some critical defect properties are still
unclear in methylammonium lead halide perovskites (MHPs). Here, a multi‐method …