One-pot synthesis of novel ligand-free tin(ii)-based hybrid metal halide perovskite quantum dots with high anti-water stability for solution-processed UVC photodetectors

Abstract

Recently, lead-based halide perovskites have gained extensive attention for their outstanding optoelectronic properties. However, the toxicity of lead would seriously limit its future application. To address these issues, in this...

Amine-directed synthesis, valence state control, and optical properties of two new organic–inorganic tin chlorides

“…S10†). 33–35 The bond valence sums of the Sn cations in compounds 1 and 2 were calculated to be 1.67 and 4.06, respectively, further verifying the +2 and +4 valence states of Sn. 36…”

Stable self-trapped broadband emission from an organolead halide coordination polymer with strong layer corrugation and high chemical robustness

“…1.5% of (N-MEDA)[PbBr 2.8 Cl 1.2 ], 16 9% of (EDBE)[PbBr 4 ], 40 Given the efficient broadband emission from TJU-19, we sought to investigate its long-term stability under various chemical conditions. First, the high crystallinity and phase purity have been largely retained after the incubation of TJU-19 in a variety of aqueous solutions over a wide range of pH values (3)(4)(5)(6)(7)(8)(9)(10)(11) and in a variety of organic solvents including high-polar protic solvents, evidenced by PXRD and negligible loss in mass balance (Fig. 3a, d and e).…”

“…Organolead halide hybrids are an emerging class of crystalline materials with excellent photophysical properties, therefore showing optoelectronic applications in light-emitting diodes, [1][2][3][4][5] photovoltaic solar cells, [6][7][8][9] and photodetectors. [10][11][12] Among them, a selected group of organolead halide perovskites have attracted widespread attention for their unique emissions from self-trapped excitons (STEs), which play the role of defective excited states to afford a large Stokes shift and broadband emission. 13 Mechanistic studies indicate that the formation of STEs originates from the structural distortion of lead halide sublattices, especially the out-of-plane distortion of halide species.…”