CZTS Monograin Powders and Thin Films

Mellikov, E.; Meißner, D.; Altosaar, M.; Kauk, M.; Krustok, J.; Öpik, Andres; Volobujeva, Olga; Iljina, J.; Timmo, K.; Kļaviņa, Inga; Raudoja, J.; Varema, T.; Muska, K.; Ganchev, M.; Bereznev, Sergei; Danilson, Mati

doi:10.4028/www.scientific.net/amr.222.8

Cited by 13 publications

(6 citation statements)

References 20 publications

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“…-it is a compound whose intrinsic point defects lead to p-type semiconductor behavior; -it has a direct bandgap and an absorption coefficient >10 4 cm −1 , which is suitable for thin film photovoltaics applications [15][16][17]; -its band gap has been predicted [18] to be 1.0 eV for Cu 2 ZnSnSe 4 and 1.5 eV for Cu 2 ZnSnS 4 and evidences of the bandgap tunability have been found via the variations of V OC [19], as well as direct measurements of the variation of the bandgap between 1.0 eV for Cu 2 ZnSnSe 4 and 1.5 eV for Cu 2 ZnSnS 4 [20][21][22][23][24]. The band gap of CZTS can also be tuned by incorporation of Ge, Ge-containing materials having smaller bandgap than their Ge-free counterparts [25].…”

Section: Advantages Of Cztsmentioning

confidence: 99%

Kësterite thin films for photovoltaics : a review

2012

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In the years to come, electricity production is bound to increase, and Cu2ZnSn(S, Se)4 (CZTS) compounds, due to their suitability to thin-film solar cells, could be a means to fulfill the demand. After explaining the reasons of the sudden interest of the CIGS scientific community for CZTS solar cells, this paper reviews recent papers published on the subject of kësterites-based solar cells. After a description of crystallographic and optoelectronic properties, including CZTS crystalline structure, defect formation and metal composition, this review paper focuses on CZTS synthesis processes and device properties. Synthesis strategies, including one-or two-step processes, deposition temperature, binary formation control via atmosphere control and their effect on device properties are discussed.

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Section: Advantages Of Cztsmentioning

confidence: 99%

Kësterite thin films for photovoltaics : a review

2012

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“…Our results on XRD and the Raman measurements at different annealing temperatures confirm the formation of CZTS and CZTSe. From a comparison of our Raman spectra and the one of CZTSSe, prepared with different sulfur to selenium ratios [12], we conclude that CZTSSe is more likely present in our layers. There are several reactions which lead to the formation of CZTSSe.…”

Section: Discussionmentioning

confidence: 74%

Cu2ZnSn(S,Se)4 from CuxSnSy nanoparticle precursors on ZnO nanorod arrays

et al. 2013

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Solar cells with Cu 2 ZnSnS 4 absorber thin films have a potential for high energy conversion efficiencies with earth-abundant and non-toxic elements. In this work the formation of CZTSSe from Cu x SnS y nanoparticles (NPs) deposited on ZnO nanorod (NR) arrays as precursors for zinc is investigated. The NPs are prepared using a chemical route and are dispersed in toluene. The ZnO NRs are grown on fluorine doped SnO 2 coated glass substrates by electro deposition method. A series of samples are annealed at different temperatures between 300 °C and 550 °C in selenium containing argon atmosphere. To investigate the products of the reaction between the precursors the series is analyzed by means of x-ray diffraction (XRD) and Raman spectroscopy. The morphology is recorded by scanning electron microscopy (SEM) images of broken cross sections. The XRD measurements and the SEM images show the disappearing of ZnO NRs with increasing annealing temperature. Simultaneously the XRD and Raman measurements show the formation of CZTSSe. The formation of secondary phases and the optimum conditions for the preparation of CZTSSe is discussed.

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Section: Methodsmentioning

confidence: 99%

“…CZTSSe monograins are synthesized from copper, zinc sulfide, zinc selenide, tin, and sulfur precursors in potassium iodine (KI) as flux material as described in detail in previous papers. 2,6 After the synthesis of the CZTSSe monocrystals a washing procedure with water removes the KI, after which the powder is dried and sieved to obtain powders of desired grain sizes. This is followed by a heat treatment step at 740°C and the deposition of cadmium sulfide (CdS) by chemical bath deposition employing cadmium acetate as cadmium source and thiourea as sulfur source in an ammonia solution.…”

Section: Methodsmentioning

confidence: 99%

“…Despite the beneficial properties such as a direct tunable bandgap, high absorption coefficient and low temperature coefficient, the efficiency of photovoltaic applications with CZTSSe as absorber is still considerably smaller than the record efficiency of CIGS, which was reported to be 22.6% . Several possible reasons for a reduction of device performance parameters such as open circuit voltage ( V oc ) and short circuit current density ( j sc ) of CZTSSe compared to CIGS thin film photovoltaic devices were reported in the literature and summarized by Aninat et al …”

Section: Introductionmentioning

confidence: 99%

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Spatially resolved opto‐electrical performance investigations of Cu₂ZnSnS_3.2Se_0.8 photovoltaic devices

Neubauer

Samieipour

Oueslati

et al. 2018

Energy Science & Engineering

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A new statistical analysis of spatially resolved photocurrent and electroluminescence images has been developed and applied to Cu2ZnSn(SxSe1−x)4 (CZTSSe) monograin solar cells. CZTSSe as an absorber material has the potential to significantly reduce manufacturing costs and develop new application fields in photovoltaics. Deep understanding of the performance related parameters in various production steps is crucial for further development of the technology. In this paper we show that by a thorough investigation by means of a combination of opto‐electrical measurement methods such as light beam induced current mapping, scanning electron microscopy, optical microscopy, photoluminescence, and electroluminescence measurements a correlation with different current‐voltage (j/V) measurement parameters can be established. Hereby, we clearly identify barrier variations at the active interface as the main reason for current variations across the cell, which for record cells can largely be avoided. These variations show up clearly in the microscopic spatial analysis developed. The detailed analysis of the homogeneity of the solar cell photocurrent presented in this study is relevant for all kinds of solar cells including thin‐film and wafer‐based cells.

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CZTS Monograin Powders and Thin Films

Cited by 13 publications

References 20 publications

Kësterite thin films for photovoltaics : a review

Kësterite thin films for photovoltaics : a review

Cu2ZnSn(S,Se)4 from CuxSnSy nanoparticle precursors on ZnO nanorod arrays

Spatially resolved opto‐electrical performance investigations of Cu₂ZnSnS_3.2Se_0.8 photovoltaic devices

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CZTS Monograin Powders and Thin Films

Cited by 13 publications

References 20 publications

Kësterite thin films for photovoltaics : a review

Kësterite thin films for photovoltaics : a review

Cu2ZnSn(S,Se)4 from CuxSnSy nanoparticle precursors on ZnO nanorod arrays

Spatially resolved opto‐electrical performance investigations of Cu2ZnSnS3.2Se0.8 photovoltaic devices

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Product

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Spatially resolved opto‐electrical performance investigations of Cu₂ZnSnS_3.2Se_0.8 photovoltaic devices