Theoretical investigation of FAPbSnGeX₃ efficiency

Abstract

We systematically study the structural, electronic, and optical properties of lower lead halide perovskites FAPb0.5Sn0.25Ge0.25X3 (X = I, Br, Cl), as well as discussing their photovoltaic performance.

End group modulation of A–D–A type small donor molecules for DTP based organic photovoltaic solar cells: a DFT approach

“…where, the dimensionless voltage is denoted by the letter n oc and can be calculated using eqn (13): 27,28…”

“…One of the key parameters affecting the η value is the FF, which may be determined as follows: 27,28 where, the dimensionless voltage is denoted by the letter ν oc and can be calculated using eqn (13): 27,28 Here, the elementary charge, Boltzmann constant, and absolute temperature are each denoted by the letters e , k B , and T . Further, eqn (14) is used to calculate the eV oc value.…”

Optoelectronic, thermoelectric and 3D-Elastic properties of lead-free inorganic perovskites CsInZrX6 (I, Cl and Br) for optoelectronic and thermoelectric applications

“…Due to their low-cost production technique, high optical absorption, and unique electronic features, organicinorganic hybrid perovskites have recently emerged as one of the most popular alternative materials to traditional semiconductors in photovoltaics and light-emitting systems [1][2][3][4][5][6][7][8][9][10][11][12][13]. The general formula of hybrid perovskite is ABX 3 or A 2 BX 6 where A represents the inorganic-organic cations (A = Cs, Rb, In, NH 2 CHNH 2 , CH 3 NH 3 ), B represents the metal cations (B = Ti, Zr, Pb, Sn, Ge, Be), and X represents the halide anions (X = I, Br, Cl) [5][6][7][8][9].…”

“…Due to their low-cost production technique, high optical absorption, and unique electronic features, organicinorganic hybrid perovskites have recently emerged as one of the most popular alternative materials to traditional semiconductors in photovoltaics and light-emitting systems [1][2][3][4][5][6][7][8][9][10][11][12][13]. The general formula of hybrid perovskite is ABX 3 or A 2 BX 6 where A represents the inorganic-organic cations (A = Cs, Rb, In, NH 2 CHNH 2 , CH 3 NH 3 ), B represents the metal cations (B = Ti, Zr, Pb, Sn, Ge, Be), and X represents the halide anions (X = I, Br, Cl) [5][6][7][8][9]. In particular, the organic-inorganic halide hybrid perovskites APbI 3 (A = NH 2 CHNH 2 , CH 3 NH 3 ) [4][5][6] have received considerable attention from researchers due to their appropriate band gaps for photovoltaic applications, high photoelectric conversion efficiency (greater than 20%), and strong optical absorption.…”

“…One way to address these concerns is to use nontoxic halide perovskites, formed by replacing the divalent Pb with a mixture of monovalent and trivalent metals [1,3,[5][6][7][8][9][10][11][12][13][14][15][16][17]. A number of recent studies have demonstrated that Pb-free perovskites also have promising properties for various applications.…”