Multispectral PbSxSe1−x and PbySn1−ySe photovoltaic infrared detectors∗

Ab initio study of cubic PbSxSe1−x alloys

“…These materials crystallizes in the rocksalt structure at ambient temperature and pressure. There are also many experimental studies for the mixture of these materials, for example, Lebedev and Sluchinskaya have found the appearance of ferroelectricity in these IV-VI semiconductors [23]; and investigated the samples of PbS x Se y Te 1−x−y quaternary solid solutions at low temperatures using electrical and X-ray methods [24]; photovoltaic infrared sensor arrays in monolithic lead chalcogenides on silicon are studied by Zogg et al [25]; the vacuum evaporated PbS 1−x Se x thin films were examined by Kumar et al, [26]; and multi-spectral PbS x Se 1−x photovoltaic infrared detectors [27] were realized by Schoolar et al The study of these type of alloys is very recent, and no theoretical ab initio calculation has been done to compare with. To further the insight in the nature of these materials we present here the results of ab initio total-energy calculations of the PbS and PbSe compounds and their ternary alloys PbS x Se 1−x in rocksalt structure.…”

Ab initiostudy of the structural, electronic and thermodynamic properties of PbSe1−xSx, PbSe1−xTexand PbS1−xTexternary alloys

“…Vacuum-evaporated PbS 1−x Se x thin films were examined by Kumar et al [23] and multi-spectral PbS x Se 1−x photovoltaic infrared detectors [24] were realized by Schoolar et al…”

Compositional tunability in solid solution PbSxSe1−x thin films chemically deposited on GaAs(100)

“…17 Mixed anion chalcogenide compounds, such as Cd(S,Se), Zn(S,Se) and Pb(S,Se), were deposited mainly in order to improve window layers for photovoltaic cells. [18][19][20][21][22][23][24][25][26] Kigel et al described a novel synthetic method for the formation of PbSe/PbSe x S 1−x core-alloyed shell nanocrystals by utilizing a single-injection of the core and shell constituents, simultaneously. 27 They suggested that the faster reactivity of selenide to the lead precursor, directs rapid nucleation of the PbSe core, while the sulfide reacts at a later stage, forming the PbSe x S 1−x shell.…”