Stability of all-inorganic perovskite solar cells

Recent Advances in Improving Phase Stability of Perovskite Solar Cells

“…Compared with PbS, so far, the V OC of α‐CsPbI 3 QDs based solar cell is 1.2 V, approaching the SQ limit [see blue triangles in Figure 22f], while the J SC still require further improvement. [ 113–116 ] In order to obtain a higher J SC in the devices, two aspects could be considered: 1) carrier extraction efficiency, and 2) interface recombination loss reduction.…”

“…Reproduced with permission. [ 113 ] Copyright 2016, AAAS. f) V OC as a relation with absorber bandgap for different types of CsPbX 3 .…”

“…As a result, both J SC and FF can be enhanced, leading to the record efficiency of α‐CsPbI 3 QDs solar cell. [ 113 ] Luther and co‐workers [ 83 ] proposed a halide salt surface modification approach by dropping halide salt solutions such as FAI and FABr onto the surface of quantum dots ( Figure a–e). Such treatment successfully removed oleylamine ligands and oleic acid.…”

Efficient Bidentate Molecules Passivation Strategy for High‐Performance and Stable Inorganic CsPbI2Br Perovskite Solar Cells

“…Cesium‐based all‐inorganic perovskites have witnessed extraordinary advances owing to their eye‐catching thermal‐resistance and photoelectric properties in optoelectronics and photonics application, including solar cells, [ 1–5 ] light‐emitting diodes, [ 6,7 ] photodetectors, [ 8,9 ] nanolasers application, [ 9,10 ] and so on. In particular, inducing a prominent trade‐off between the light absorption and phase stability in comparison with CsPbBr 3 and CsPbI 3 perovskites, [ 11–13 ] the mixed‐halide inorganic CsPbI 2 Br perovskites with the suitable bandgap have great potential in the application of burgeoning tandem solar cells and semitransparent photovoltaic devices. [ 14–16 ] Unfortunately, the serious energy losses ( E loss ) derived from deleterious nonradiative recombination [ 17,18 ] and inimical phase transformation to photo‐non‐active phase upon exposing to high humidity environment [ 15,19 ] are still the primary bottleneck hindering the further commercialization.…”

Enhanced Light Absorption by Facile Patterning of Nano-grating on Mesoporous TiO2 Photoelectrode for Cesium Lead Halide Perovskite Solar Cells

“…To solve this problem, several methods have been developed, including metal doping into perovskite phase [7], interface/surface treatment [6], device encapsulation technique [5], and employing an allinorganic perovskite composition [8][9][10]. Among these methods, the generally accepted effective way is to replace the volatile organic group by inorganic cesium (Cs) cations to make a Cs-based all-inorganic perovskite (CsPe) light-absorption layer.…”