Passivation and process engineering approaches of halide perovskite films for high efficiency and stability perovskite solar cells

Abstract

The surface, interfaces and grain boundaries of a halide perovskite film carry critical tasks in achieving as well as maintaining high solar cell performance due to the inherently defective nature...

Molecularly imprinted nanocomposites of CsPbBr3 nanocrystals: an approach towards fast and selective gas sensing of explosive taggants

“…50,51 Moreover, the electron pairs from the CO bond in PCL can form an intermediate adduct with the under-coordinated lead atoms in the perovskite, enhancing the perovskite grain size, achieving the grain boundary regulation and obtaining high-quality perovskite films with low defect density and high flexibility. 52–54…”

Polyacrylonitrile‐Coordinated Perovskite Solar Cell with Open‐Circuit Voltage Exceeding 1.23 V

“…[6] The uncoordinated Pb 2 + , on one hand, can induce recombination of photogenerated carriers, and on the other hand, it will provide a pathway for ion migration, [7] which further leads to the degradation of PCE. [8] Therefore, passivating defects on the surface and GBs of the perovskite layer will help improve both the efficiency and stability. [9] It has been demonstrated that additive engineering is a feasible and effective strategy to passivate defects.…”

Indolocarbazole-core linked triphenylamine as an interfacial passivation layer for perovskite solar cells

“…6 However, a large number of dangling bond defects are formed on the surface and grain boundaries of perovskite particles, due to the so crystal lattice and low defect formation energy during the crystallization of polycrystalline perovskite lms. 7 These surface defects that are dominant in the polycrystalline perovskite lms 7,8 become non-radiative recombination centers and hence diminish the photovoltaic performance of PSCs. 9 Moreover, defects can provide channels for water and oxygen invasion, thereby ruining the long-term stability of PSCs.…”