Improving the performance of 2D perovskite solar cells by carrier trappings and minifying the grain boundaries

Crystal growth of two-dimensional organic–inorganic hybrid perovskites and their application in photovoltaics

“…The introduction of additives, such as MACl 36,113–115 NH 4 Cl, 116 and NH 4 SCN 116–118 is a useful method to improve the crystal growth orientation and enlarge the grain size of the low-dimensional perovskite.…”

Revealing the Role of Band Offsets on the Charge Carrier Dynamics of CsSn0.5Ge0.5I3‐Based Perovskite Solar Cell: A Theoretical Study

“…The perovskite film, with a large grain boundary, exhibits low trap state density which is the cause for the reduction in charge carrier recombination, eventually improving the cell performance. [54] Many studies adopted strategies, such as modification of the composition of the precursor solution, controlling the fabrication condition, surface passivation by addition of Lewis acids/bases, and addition of certain dopants. [55][56][57] Zheng et al reduced the defect density from 5.65E 15 to 2.25E 15 cm À3 in a regular structure perovskite using Ti 3 C 2 T x /SnO 2 as ETL by varying the composition of the electron transport materials (ETMs).…”

Recent progress of two-dimensional Ruddlesden–Popper perovskites in solar cells

“…However, perovskite materials have exhibited relatively poor stability under humidity, light, and high temperature, which have seriously hindered their large-scale commercial applications. 7 Therefore, it has emerged as a prominent research area to enhance the stability of PSCs with a focus on developing effective strategies, including two-dimensional (2D) perovskites, 8–13 all-inorganic perovskites, 14–16 component engineering, 17–19 defect passivation engineering, 20–22 interface modification engineering, 23–25 encapsulation technology, 26 and device structure engineering. 27,28…”

“…However, perovskite materials have exhibited relatively poor stability under humidity, light, and high temperature, which have seriously hindered their large-scale commercial applications. 7 Therefore, it has emerged as a prominent research area to enhance the stability of PSCs with a focus on developing effective strategies, including two-dimensional (2D) perovskites, [8][9][10][11][12][13] all-inorganic perovskites, [14][15][16] component engineering, [17][18][19] defect passivation engineering, [20][21][22] interface modification engineering, [23][24][25] encapsulation technology, 26 and device structure engineering. 27,28 Among them, 2D perovskite materials (in this review, the 2D perovskite materials are the unified name for layered perovskites, including pure 2D perovskites, layered hybrid perovskites, 2D homologous perovskites, 2D perovskites, quasi-2D perovskites, 2D-3D perovskites, low-dimensional (LD) perovskites, and mixed-dimensional (MD) perovskites) replacing 3D a Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China.…”