Recent progress of inorganic perovskite solar cells

Abstract

Recent progress of inorganic perovskite solar cells is reviewed along with different perovskite compositions.

Controlled n‐Doping in Air‐Stable CsPbI2Br Perovskite Solar Cells with a Record Efficiency of 16.79%

“…However, the labile organic cationic methylamine (MA) and formamidine (FA) components in the hybrid perovskites easily escape or decompose at high temperature, which leads to poor long‐term stability of hybrid PSCs under heat and high‐humidity conditions 2,3. To overcome the instability issue of the organic cations, a series of heat‐resistant inorganic CsPbX 3 (X: I, Br, or mixed halides) perovskites have been developed for PSCs, which are also tolerant to oxygen exposure and ultraviolet irradiation 4–6. Among all the inorganic perovskites, the mixed halide CsPbI 2 Br has attracted intensive attention due to its excellent thermal/light soaking stability and suitable direct bandgap, potentially in the front cell for perovskite‐silicon hybrid tandem applications 7.…”

“…[2,3] To overcome the instability issue of the organic cations, a series of heat-resistant inorganic CsPbX 3 (X: I, Br, or mixed halides) perovskites have been developed for PSCs, which are also tolerant to oxygen exposure and ultraviolet irradiation. [4][5][6] Among all the inorganic perovskites, the mixed halide CsPbI 2 Br has attracted intensive attention due to its excellent thermal/light soaking stability and suitable direct bandgap, potentially in the front cell for perovskite-silicon hybrid tandem applications. [7] Numerous studies have been carried out regarding CsPbI 2 Br PSCs.…”

δ‐CsPbI3 Intermediate Phase Growth Assisted Sequential Deposition Boosts Stable and High‐Efficiency Triple Cation Perovskite Solar Cells

“…Generally, the A site is occupied by a monovalent organic or inorganic cation (e.g., CH 3 NH 3 + (MA); HC(HN 2 ) 2 + (FA); Cs + ; Rb + ), the B is often a metal cation (e.g., Pb 2+ ; Sn 2+ ), and the X is typically a halide anion (e.g., Cl‐; Br – ; I – ; SCN – ). Compositional engineering of the hybrid metal halide perovskite or inorganic perovskite materials with mixed cations and halides is an effective strategy to achieve further improvements in PCE and long‐term stability of the devices …”

“…Compositional engineering of the hybrid metal halide perovskite or inorganic perovskite materials with mixed cations and halides is an effective strategy to achieve further improvements in PCE and long-term stability of the devices. [2][3][4][5][6][7][8][9][10][11][12] So far, almost all the records shown in the NREL chart of certified PCE are achieved by employing the mixed perovskites, except for the first one of MAPbI 3 . [13] Tailoring the proportions of FA, MA, I, and Br effectively boosts the PCE of the PSCs based on (FA/ MA)Pb(I/Br) perovskites, [2] however, these double cation FA/ MA mixed perovskites are sensitive to processing conditions and suffer from rapid degradation of device performance following operation under illumination, resulting from their intrinsic structural and thermal instability.…”

Role of graphene and transition metal dichalcogenides as hole transport layer and counter electrode in solar cells

“…To explore low‐cost PV devices, second generation SCs (commonly known as thin film SCs) were introduced, but the PCE of these PV devices were not comparable with first generation SCs, which led the scientists to develop a more efficient and cost‐effective technology. Later on, the third generation SCs were developed including organic/inorganic, dye‐sensitized, tandem, and perovskite SCs . These devices were quite inexpensive as compared with the first two generations.…”