A chiral two-dimensional perovskite-like lead-free bismuth(iii) iodide hybrid with high phase transition temperature

Abstract

[(S)-3-Aminopyrrolidinium I]2Bi2/3I4 is a novel chiral two-dimensional perovskite-like lead-free bismuth(iii) iodide hybrid showing a high phase transition temperature and a narrow bandgap.

A polar two-dimensional lead-free hybrid perovskite for self-powered polarization-sensitive photodetection

“…At present, a 2D Bi-based perovskite is still a type of underexplored material with only three examples reported, all of which are non-polar structures. [25][26][27] Polar perovskite materials, including ferroelectrics and pyroelectrics, have emerged as competitive self-powered photodetection candidates. 7,17 In this context, it is urgent to develop polar Bi-based perovskites for green and high-performance self-powered polarization-sensitive photodetection.…”

1D Chiral Enantiomer Lead-Free Perovskites Induced Chiralopical Activity and Photoelectric Response

“…19 Hence, Bi 3+ -based OIHMs are attractive choices to replace lead perovskites. 20 The first use of methylammonium bismuth iodide, [(CH 3 NH 3 ) 3 ][Bi 2 I 9 ] as light absorbers in solar cells was reported by Park et al 21 The results indicate that bismuth perovskites hold significant potential for advancement in the field of lead-free solar cells. Hybrid compounds consisting of halobismuthates(III) and other organic molecules have received considerable attention due to their supplementary electronic and optical features, including photoluminescence (PL), nonlinear optical (NLO) behavior, and ferroelectricity.…”

“…In addition, being adjacent to divalent lead cations (Pb 2+ ) in the periodic table, the trivalent bismuth cations (Bi 3+ ) have similar 6s 2 lone pair electrons, which endow MAPbX 3 with long carrier lifetimes and strong light absorption . Hence, Bi 3+ -based OIHMs are attractive choices to replace lead perovskites . The first use of methylammonium bismuth iodide, [(CH 3 NH 3 ) 3 ]­[Bi 2 I 9 ] as light absorbers in solar cells was reported by Park et al The results indicate that bismuth perovskites hold significant potential for advancement in the field of lead-free solar cells.…”