Optical spectroscopy of chalcopyrite compounds CuInS2, CuInSe2 and their solid solutions

Мудрый, А. В.; Victorov, I.A.; Gremenok, V. F.; Patuk, A. I.; Shakin, I. A.; Yakushev, М. V.

doi:10.1016/s0040-6090(03)00210-4

Cited by 18 publications

(24 citation statements)

References 11 publications

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“…Such a magnitude inequivocally demonstrates the formation of a muonium state with a quasi-atomic character, similarly to the neutral interstitial hydrogen configuration described previously in the paper for CIS and CIGS (see Figure 5). The difference in the respective magnitudes of A iso after rescaling by the ratio of the muon-to-proton magnetic moments (∼ 3.18) [4] should be traced to the different chemical composition (sulphur instead of selenium), the larger band gap of the CuInS 2 compound (1.55 eV) and smaller lattice parameters [55,56]. Overall, the obtained A iso values for the neutral hydrogen/muonium states in CIS and CuInS 2 are consistent with reported A iso constants for normal muonium states in several elemental (Si, Ge) and compound semiconductors (InSb, GaAs) that reach as high as 70 % of the free-atom value [49].…”

Section: µSr Experimental Resultsmentioning

confidence: 99%

Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Marinopoulos

Vilão

Alberto

et al. 2021

Philosophical Magazine

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First-principles calculations were performed jointly with muon-spin (µSR) spectroscopy experiments in order to examine the electrical activity of hydrogen in mixed-cation chalcopyrite Cu(In1−x,Gax)Se2 (CIGS) alloys and other related compounds commonly used as absorbers in solar-cell technology. The study targeted the range of Ga concentrations most relevant in typical solar cells. By means of a hybridfunctional approach the charge-transition levels of hydrogen were determined and the evolution of the defect pinning level, E(+/-), was monitored as a function of the Ga content. The use of E(+/-) as a metric of the charge-neutrality level allowed the alignment of band structures, thus providing the band offsets between the CuInSe2 compound and the CIGS alloys. The µSR measurements in both thin-film and bulk CIGS materials confirmed that the positively-charged state is the thermodynamically stable configuration of hydrogen for p-type conditions. The interpretation of the µSR data further addressed the existence of a metastable quasi-atomic neutral configuration that was resolved from the calculations and led to a formation model for muon implantation.

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Section: µSr Experimental Resultsmentioning

confidence: 99%

Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Marinopoulos

Vilão

Alberto

et al. 2021

Philosophical Magazine

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“…No evidence of secondary phases was observed from the XRD data. Furthermore, it is very important to remark that the (1 1 2) peak at 2Â = 26.9 • is sample based on the composition to band gap relation [28,29]. In order to get insight into its microstructure profile, the cross section of the annealed CIGS film is present, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Cu(In,Ga)Se2 thin films by pulse electrodeposition

Liu

Huang

Lai

et al. 2011

Journal of Alloys and Compounds

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“…Throughout the wavelength range between 1230 and 1510 nm, CL intensities were found to be decreased at non-R3 GBs with respect to the signals in grain interiors. The band-gap energy of CISe is about 1.04 eV at room temperature, 24 increasing to about 1.05 eV at 8 K. 25 The local maxima in the CL spectrum are positioned at 0.90 and 0.97 eV (1377 and 1283 nm), which can be related 26 to donoracceptor pair transitions. The CL results in the present work do not indicate any preferential luminescence at the GBs with respect to the grain interiors.…”

Section: E Ebic CL and Ebsd Data From Identical Positionsmentioning

confidence: 98%

Electron-beam-induced current at absorber back surfaces of Cu(In,Ga)Se2 thin-film solar cells

Kavalakkatt

Abou‐Ras

Haarstrich

et al. 2014

Journal of Applied Physics

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The present work reports on investigations of the influence of the microstructure on electronic properties of Cu(In,Ga)Se 2 (CIGSe) thin-film solar cells. For this purpose, ZnO/CdS/CIGSe stacks of these solar cells were lifted off the Mo-coated glass substrates. The exposed CIGSe backsides of these stacks were investigated by means of electron-beam-induced current (EBIC) and cathodoluminescence (CL) measurements as well as by electron backscattered diffraction (EBSD). EBIC and CL profiles across grain boundaries (GBs), which were identified by EBSD, do not show any significant changes at R3 GBs. Across non-R3 GBs, on the other hand, the CL signals exhibit local minima with varying peak values, while by means of EBIC, decreased and also increased short-circuit current values are measured. Overall, EBIC and CL signals change across non-R3 GBs always differently. This complex situation was found in various CIGSe thin films with) ratios. A part of the EBIC profiles exhibiting reduced signals across non-R3 GBs can be approximated by a simple model based on diffusion of generated charge carriers to the GBs. V C 2014 AIP Publishing LLC.

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Optical spectroscopy of chalcopyrite compounds CuInS2, CuInSe2 and their solid solutions

Cited by 18 publications

References 11 publications

Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Preparation of Cu(In,Ga)Se2 thin films by pulse electrodeposition

Electron-beam-induced current at absorber back surfaces of Cu(In,Ga)Se2 thin-film solar cells

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Optical spectroscopy of chalcopyrite compounds CuInS2, CuInSe2 and their solid solutions

Cited by 18 publications

References 11 publications

Hydrogen states in mixed-cation CuIn(1−x)GaxSe2 chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Hydrogen states in mixed-cation CuIn(1−x)GaxSe2 chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Preparation of Cu(In,Ga)Se2 thin films by pulse electrodeposition

Electron-beam-induced current at absorber back surfaces of Cu(In,Ga)Se2 thin-film solar cells

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Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy

Hydrogen states in mixed-cation CuIn_(1−x)Ga_xSe₂ chalcopyrite alloys: a combined study by first-principles density-functional calculations and muon-spin spectroscopy