Structurally Dimensional Engineering in Perovskite Photovoltaics

Abstract

The low-dimensional (LD) perovskites are proven to be capable of blocking moisture erosion and thereby improving the photovoltaic device stability. In this review, the low-dimensional (LD) perovskite materials are carefully summarized that are induced by A-position organic substituents, starting from the crystal microstructure and electronic structure of LD (2D, 1D, and 0D) perovskite materials with regulating dimensions, combined with first principles calculation (DFT). By further studying the thermodynamics and dynamics of crystallization nucleation and growth of LD-3D perovskite thin films in the heterojunction region, LD-3D heterojunction perovskite thin films and solar cells with controllable dimensions can be in situ prepared. Various LD-3D perovskite structure photovoltaic devices are systematically summarized, which shows flexible regulation of the energy band structure and carrier transport characteristics, locks the water oxygen corrosion channel with close-fitting conjugated structure, and improves the long-term stability of the LD-3D perovskite solar cells. This review is expected to provide some guidance for the perovskite development and multipurpose use through in depth understanding of the structurally dimensional engineering in perovskite photovoltaics.

The chemistry of the s- and p-block elements with 2,2′:6′,2′′-terpyridine ligands

“…Perovskites of low dimensionality are of particular interest due to their ability to block moisture erosion and, thus, improve the stability of photovoltaic devices. 309 It was demonstrated that cautious control of the reaction conditions enabled the tuning of the material's crystallinity and, thus, their properties (i.e., electronic dimensionality and bandgaps; Fig. 37).…”

Promoting the formation of metal–carboxylate coordination to modulate the dimensionality of ultrastable lead halide hybrids

“…A variety of synthetic strategies have been developed to control the dimensionality of lead halide sublattices at the molecular level. 16 For example, incorporating organoammonium cations with large molecular size and high rigidity oen leads to the formation of low-dimensional lead halide hybrids. [17][18][19] In addition, a commonly employed approach involves varying synthesis conditions such as precursor ratios, temperatures and solvents, which oen serendipitously result in the formation of lead halide hybrids with different dimensionalities.…”

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

“…Key elements in the solar cell device include the perovskite active layer, the ETL, and the HTL . The PSC architecture can comprise either the standard n-i-p configuration (here referred to as a PSC), or the inverted p-i-n configuration (IPSC); the former can be further separated into mesoporous and planar structures, whereas the latter is typically planar. , IPSCs are of interest due to their advantages of lower manufacturing cost and easier integration into stacked cells with mature commercialized silicon-based solar cells. − Currently, the latest inverted structure PSCs are making good progress in terms of efficiency. The efficiency development timeline of IPSCs is shown in Figure and Table .…”