Reversible thermochromism, temperature-dependent conductivity and high stability for a laminated bismuth(iii)–silver(i) hybrid double perovskite

Abstract

Lead free hybrid perovskite materials have attracted tremendous consideration due to their applications in photovoltaic, optoelectronics and thermal sensors etc. Herein, we isolated a new stable semiconductive 2D bismuth(III)-silver(I) iodide...

A semiconductive copper iodobismuthate hybrid: structure, optical properties and photocurrent response

“…4b), which is in accordance with the color of dark-red and narrower than those of many high-performance light absorbers (Fig. 4c 16,20,[23][24][25]30,39,[46][47][48][49][50] Mott-Schottky plots were used to further study the optical behavior of the title compound. As shown in Fig.…”

“…Representative examples include [La(DMSO) 8 ]Bi 2 I 9 (2.21 eV), [Bi(DMSO) 8 ]Bi 2 I 9 (2.17 eV), [AmV]BiI 5 (1.54 eV), [PiC 2 ] 2 Bi 2 I 10 (2.08 eV), PiC 5 BiI 5 (1.73 eV), [PiC 5 ] 2 Bi 4 I 16 (2.10 eV), [HpipeH 2 ] 2 Bi 2 I 10 ·2H 2 O (1.80 eV), LiBiI 4 ·5H 2 O (1.70 eV), KBiI 4 ·H 2 O (1.76 eV), [CH 3 NH 3 ] 3 Bi 2 Br 9 (2.50 eV), [H 2 MPP] 2 AgBiI 8 (2.26 eV), [APP] 4 AgBiI 8 ·H 2 O (2.12 eV), [AMP] 4 AgBiI 8 ·H 2 O (2.07 eV), [Ni(bipy) 3 ]AgBiBr 6 (2.06 eV), [NH 4 ] 3 Bi 2 I 9 (2.04 eV), [C 8 H 20 N] 2 Ag 2 Bi 4 I 16 (1.93 eV) and [Et 4 N] 2 Cu 2 Bi 2 I 10 (1.89 eV). 16,20,23–25,30,39,46–50…”

“…This huge progress had been demonstrated by [C 12 H 18 N 2 S 2 ] 2 AgBiI 8 , [C 3 H 9 NI] 4 AgBiI 8 , [APP] 4 AgBiI 8 ·H 2 O, [AMP] 4 Ag 2 Bi 2 I 16 ·H 2 O, [C 6 H 16 N 2 ] 2 CuBiI 8 ·0.5H 2 O, [C 6 H 16 N 2 ] 2 AgBiI 8 ·H 2 O, [C 8 H 18 N] 4 CuBiI 8 , [C 6 H 16 N 2 ] 2 CuBiI 8 , [C 7 H 16 N] 4 CuBiI 8 , [C 6 H 16 N 2 ] 2 CuBiI 8 ·H 2 O, [C 6 H 14 N] 4 CuBiI 8 ·H 2 O, [C 5 H 13 N 2 ] 4 AgBiI 8 ·H 2 O and [H 2 MPP] 2 AgBiI 8 . 18–27 Nevertheless, most of the existing compounds crystallized in the common perovskite phases characteristic of octahedra in the corner-sharing mode only, and Cu/Ag–Bi–I compounds with novel structures have rarely been isolated to date. Thus, the quest for new types of heterometal iodobismuthates and in-depth understanding of their structure–performance relationships remained fascinating but challenging.…”

“…The documented [Bi x I y ] (y−3x)− anionic moieties ranged from some zero-dimensional (0D) clusters, one-dimensional (1D) chains and few two-dimensional (2D) layers, as exemplified by 0D- [ [8][9][10][11][12][13][14][15][16][17] In order to further acquire more complicated motifs, an effective strategy is to design and fabricate heterometal iodobismuthates by embedding the second types of metal ions, typically monovalent Cu + and Ag + . This huge progress had been demonstrated by [ [18][19][20][21][22][23][24][25][26][27] Nevertheless, most of the existing compounds crystallized in the common perovskite phases characteristic of octahedra in the cornersharing mode only, and Cu/Ag-Bi-I compounds with novel structures have rarely been isolated to date. Thus, the quest for new types of heterometal iodobismuthates and in-depth understanding of their structure-performance relationships remained fascinating but challenging.…”

Two-dimensional semiconducting Cu(i)/Sb(iii) bimetallic hybrid iodides with a double perovskite structure and photocurrent response

“…35 There have been many reports on Bi-based iodide double perovskites whether inorganic or organic-inorganic hybrid compounds. [36][37][38] Sb 3+ , similar to Bi 3+ , is also explored as a candidate to replace Pb 2+ in lead-free metal halide perovskites. Xia et al prepared a double perovskite of Cs 2 AgSbCl 6 , which is found to have a varied band gap associated with different body colors.…”