Novel zero-dimensional lead-free bismuth based perovskites: from synthesis to structural and optoelectronic characterization

Abstract

Despite high photo-conversion efficiency, the short long-term stability and toxicity issues have prevented lead-based perovskites from becoming the standard in high efficiency solar cells. Hence, lead-free perovskites with low inorganic...

Water‐Resistant Lead‐Free Perovskitoid Single Crystal for Efficient X‐Ray Detection

“…[ 34,35 ] Each [BiI 6 ] 3− octahedra forms hydrogen bonding interactions with the four surrounding BAH + cations. (BAH)BiI 4 exhibits N–H•••I hydrogen bonding distances of 2.984 and 3.046 Å, which are larger than those of 1D (HO 2 C(C 6 H 4 )CH 2 NH 3 )BiI 4 [ 36 ] (3.638 Å) and comparable to those of 0D C 20 H 20 N 4 Bi 2 I 10 [ 37 ] (2.921 and 3.086 Å), indicating strong hydrogen bonding interactions. There was also a C–H•••I interaction with a distance of 3.136 Å, which all can be determined from the sums of their van der Waals radii (Figure S1c).…”

Molecular and Supramolecular Structures of Triiodides and Polyiodobismuthates of Phenylenediammonium and Its N,N-dimethyl Derivative

“…Unfortunately, hybrid perovskites obtained by isovalent substitutions with group 14 elements (Sn and Ge) are extremely unstable. In recent years, many metals other than lead have been tested as building centers of various metal–halide complexes, leading to remarkable progress in understanding how their dimensionality affects optical absorption and carrier dynamics [ 5 , 6 , 7 , 8 , 9 ]. Moreover, it has been demonstrated that among multifarious halometallates, there exists a smaller family of polyhalometallates.…”

O papel da dimensionalidade de perosvkitas híbridas orgânicas-inorgânicas nas propriedades estruturais, energéticas e optoeletrônicas

“…. 1 which were employed as models to investigate the role of inorganic halide complex via the Bi 3+ and Ispecies substitution. .…”

“…Low-dimensional perovskites have inorganic octahedra interspersed by organic cations in one, two or three directions, creating two-dimensional perovskites (2D) 89,90 threads (one-dimensional perovskites, 1D), 91,92 or simply small interspersed octahedra clusters (zero-dimensional perovskites, 0D). 1,93 2D halide perovskites include nanosheets and nanoplatelets; nanowires and nanorods are archetypal examples of 1D perovskites; 0D perovskites include nanoparticles and quantum dots (QD), 94 where quantum dots solar cells fabricated with Cs 0.5 FA 0.5 PbI 3 presented certified PCE of 16.6 eV in a short time. 95 2D perovskites are generally derivative of 3D structures by slicing along one crystallographic plane.…”

“…115 The non-toxic Sb 3+ and Bi 3+ are prominent inside octahedron of 0D perovskites, i.e., antimony and bismuth (B) form stable halide-anionic complexes with a large variety of size and shapes, e.g., isolated octahedron (BX 3− 6 ), 116,117 edge-sharing (B 2 X 4− 10 ), 113,118 and face-sharing (B 2 X 3− 9 ). 1 Hybrid and all-inorganic 0D perovskites turned up with photoluminescence quantum yields 118,119 increased air-stability, 93 and high-exciton-binding energy features. 120 The structural versatility of the organic/inorganic cations and the halide-anionic complexes have a significant role in these features.…”