Near-infrared luminescence of RbPb_2Cl_5:Bi crystals

Abstract

A wideband near-IR (NIR) luminescence centered at 1080 nm was found in a RbPb(2)Cl(5):Bi single crystal grown by the Bridgman technique. Absorption, luminescence, and excitation of luminescence spectra were investigated at room and cryogenic temperatures. The luminescence was proposed to be due to the (3)P(1)-->(3)P(0) transition in Bi(+) ion.

NIR photoluminescence of bismuth-doped CsCdBr3 – The first ternary bromide phase with a univalent bismuth impurity center

“…It was shown that several of such subvalent bismuth forms (Bi + [4][5][6][7][8][9][10][11], Bi 5 3+ [12][13][14][15][16], Bi 2 8+ [16]) demonstrate the broadband NIR PL.…”

“…Univalent bismuth impurity, observed in several chloride [6][7][8][9][10], iodide [18,19] and nonhalide crystal phases [11,[20][21][22][23][24][25], represents the simplest form of NIR photoluminescent subvalent bismuth center. It possesses the 6p 2 open shell electronic configuration with the 3 P 0 ground state and 3 P 1 , 3 P 2 low lying excited states.…”

Experimental and theoretical studies of photoluminescence from Bi82+ and Bi53+ stabilized by [AlCl4]− in molecular crystals

“…To obtain a rational explanation of the observed photophysical 5 behaviors, next we performed a detailed quantum chemistry calculation on Bi 8 2+ polycation using the Amsterdam Density Functional (ADF) program package developed by Baerends et al. 20,21 The geometry of Bi 8 2+ obtained from the XRD analysis was used for the following calculations.…”

Near infrared photoluminescence of the univalent bismuth impurity center in leucite and pollucite crystal hosts

“…Since the discovery of the broadband near-infrared (NIR) photoluminescence from bismuth doped glasses [1][2][3][4][5] and crystalline materials [6][7][8][9][10][11][12][13][14][15][16][17][18][19] the nature of corresponding luminescent species is widely discussed. The Bi 3+ ion in the common oxidation state +3 has no optical transitions in NIR and the observed emission was attributed to possible Bi 5+ , 1 Bi 2+ , 20 Bi + , 21 Bi 0 , 8,9,22 Bi 2 À , Bi 2 2À , 23 and bismuth cluster species.…”

“…[29][30][31][32][33] It is interesting that NIR luminescence has also been detected from the bismuth dimer anion (Bi 2 2À ) in the (K-crypt) 2 Bi 2 crystal phase. 34 It was also demonstrated that the univalent bismuth cation (Bi + ) is the NIR emitter in the ternary halide crystals KAlCl 4 , KMgCl 3 , RbPb 2 Cl 5 , and CsCdCl 3 , 14,17,18,35,36 where Bi + substitutes isomorphically for the large alkali cations. On the other hand, it seems that several different emitters contribute to the net NIR photoluminescence in Bi-doped SiO 2 and GeO 2 -based glasses.…”