Structural Properties and Stability of Inorganic CsPbI₃ Perovskites

Abstract

All inorganic lead halide perovskites (ILHPs) have recently become one of the research hotspots in the field of photovoltaics. Due to the absence of weakly bonded organic components, ILHPs exhibit excellent thermal stability compared with the hybrid organic–inorganic perovskites. However, the low structural stability against ambient conditions still limits their practical applications. Herein, the phase stability and structural properties of the inorganic CsPbI3 are discussed, followed by a comprehensive review of strategies to improve the performance and stability of CsPbI3 perovskite solar cells (PSCs) with respect to material engineering and device configuration engineering. Finally, the challenges of inorganic PSCs and the promising directions to further improve their efficiency and stability are discussed.

Out‐of‐Glovebox Integration of Recyclable Europium‐Doped CsPbI3 in Triple‐Mesoscopic Carbon‐Based Solar Cells Exceeding 9% Efficiency

“…It is expected to be detrimental to the performance of the devices. [ 43 ] On the contrary, CsPbI 3 :EuI 2 prepared at HT in mC‐PSC does not show any trace of residual yellow phase.…”

Deuterated N,N-dimethylformamide (DMF-d7) as an additive to enhance the CsPbI3 solar cell efficiency

“…5,6 Fortunately, as an effective alternative, all-inorganic perovskites (CsPbX 3 , X = Cl, Br, I) can improve the thermal stability of PSCs. [7][8][9] However, compared with organic-inorganic hybrid PSCs, the PCE of all-inorganic PSCs is lower. 10,11 A very limited part of the challenge may be due to their large band gap.…”

Electrochemically Quantifying the Phase Transition of Cesium Lead Halide Perovskite Quantum Dots in Purification

“…In recent years, halide perovskite quantum dots (PeQDs) have attracted extensive attention because of not only their excellent photoelectric properties of the perovskite structure but also their nanoscale phase stabilization in the form of QDs . These make PeQDs a hot topic of study in photovoltaics (PV) − and other optoelectronic applications such as quantum dot light-emitting diodes (QLEDs). − Particularly, the power conversion efficiency (PCE) of the first PeQDs solar cells reported in 2016 is 10.77%, which has rapidly increased to 17.39% recently. The halide perovskite LEDs (PeLED) have also demonstrated unprecedented superior performance.…”