Structural effects on optoelectronic properties of halide perovskites

Abstract

Halide perovskites have prompted the evolution of the photovoltaic field and simultaneously demonstrated their great potential for application in other optoelectronic devices. A fundamental understanding of their structure-property relationship is essential to fabricate novel materials and high-performance devices. This review gives a perspective on different synthetic methodologies for the preparation of halide perovskites and highlights the effects of structural factors such as crystal structure, grain size, nanoscale dimensionality, patterned arrangement, and hierarchical structure on their optoelectronic properties. The main emphasis is given to 0D, 1D and 2D nanostructured materials including their common synthesis methods and key structural properties. Structural factors should be precisely controlled during the material preparation and device fabrication to improve the performance of targeted applications.

Influence of Grain Size on Phase Transitions in Halide Perovskite Films

“…[35] Nevertheless, an understanding of the underpinning differences in structural and mechanical properties of bulk films with different grain sizes, and how grain size influences their crystal phase heterogeneity, is still lacking. [35] Nevertheless, an understanding of the underpinning differences in structural and mechanical properties of bulk films with different grain sizes, and how grain size influences their crystal phase heterogeneity, is still lacking.…”

“…and higher absorption coefficients. [35] Nevertheless, an understanding of the underpinning differences in structural and mechanical properties of bulk films with different grain sizes, and how grain size influences their crystal phase heterogeneity, is still lacking. Furthermore, varying the grain size without otherwise changing the material composition provides a controllable lever to vary the local environment and thus systematically investigate the link between the local surroundings and the hysteretic phase transition phenomena.…”

Lead‐Free Cs3Bi2Br9 Perovskite as Photocatalyst for Ring‐Opening Reactions of Epoxides

“…All‐inorganic halide perovskites with a general formula of ABX 3 (A=Rb, Cs; B=Ge, Pb, Sn; and X=Cl, Br, I) have attracted immense research interest owing to their unique photovoltaic and optoelectronic properties . This class of materials includes other derivative perovskites such as Cs 3 Bi 2 X 9 , Cs 3 Fe 2 Br 9 , and the double perovskite Cs 2 AgBiX 6 .…”

“…The Cs 3 Bi 2 Br 9 photocatalyst exhibited good stability and recyclability.I nc ontrast, the lead-based perovskite showed ac onversion rate of only 1%.T he origin of the unexpected catalytic behavior was attributedt ot he combination of the photocatalytic process andt he presence of suitable Lewis-acidic centers on the surface of the bismuth halide perovskite photocatalyst.All-inorganic halide perovskites with ag eneral formulao fA BX 3 (A = Rb, Cs;B= Ge, Pb, Sn;a nd X = Cl, Br,I )h ave attracted immense research interest owing to their unique photovoltaic and optoelectronic properties. [1] This class of materials includes other derivativep erovskites such as Cs 3 Bi 2 X 9 , [2] Cs 3 Fe 2 Br 9 , [3] and the double perovskite Cs 2 AgBiX 6 . [4] Halide perovskites have been explored for applications in variousf ields such as solar cells, [5] lasers, [6] and phototransistors [7] and have also started to gain increasing attention in the field of heterogeneous catalysis.…”

“…All-inorganic halide perovskites with ag eneral formulao fA BX 3 (A = Rb, Cs;B= Ge, Pb, Sn;a nd X = Cl, Br,I )h ave attracted immense research interest owing to their unique photovoltaic and optoelectronic properties. [1] This class of materials includes other derivativep erovskites such as Cs 3 Bi 2 X 9 , [2] Cs 3 Fe 2 Br 9 , [3] and the double perovskite Cs 2 AgBiX 6 . [4] Halide perovskites have been explored for applications in variousf ields such as solar cells, [5] lasers, [6] and phototransistors [7] and have also started to gain increasing attention in the field of heterogeneous catalysis.…”