References of "Arasimowicz, Monika 40021025"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailNanometre-scale optical property fluctuations in Cu2ZnSnS4 revealed by low temperature cathodoluminescence
Mendis, B. G.; Taylor, A. A.; Guennou, Maël et al

in Solar Energy Materials & Solar Cells (2018), 174

Detailed reference viewed: 137 (6 UL)
Full Text
Peer Reviewed
See detailNanometre-scale optical property fluctuations in Cu2ZnSnS4 revealed by low temperature cathodoluminescence
Mendis, B. G.; Taylor, A. A.; Guennou, Mael et al

in Solar Energy Materials & Solar Cells (2017), 174

Detailed reference viewed: 95 (1 UL)
Full Text
Peer Reviewed
See detailElectrodeposition of Kesterite thin films for photovoltaic applications: Quo vadis?
Colombara, Diego UL; Crossay, Alexandre UL; Vauche et al

in Physica Status Solidi A. Applications and Materials Science (2015), 212(1), 88-102

This paper aims at providing an updated overview of the main achievements in the development of solar cells based on Cu2ZnSn(S,Se)4 (CZTS(Se)) kesterite absorbers obtained by electrodeposition. Although ... [more ▼]

This paper aims at providing an updated overview of the main achievements in the development of solar cells based on Cu2ZnSn(S,Se)4 (CZTS(Se)) kesterite absorbers obtained by electrodeposition. Although undoubtedly challenging, the ultimate goal is to learn from the past works and build a solid framework for future advances in this field. What is the reason for the lower efficiency of electrodeposited CZTS(Se)-based devices (8%) compared to the world record efficiency achieved with a hydrazine-based solution approach (12.6%)? Can this gap be filled, or there are intrinsic limitations for this achievement? The review is divided into the three main electrodeposition approaches: sequential elemental layer, alloy co-deposition, and chalcogenide co-deposition. It is argued that considerable technical challenges must be overcome for the latter approach to be successfully applied. [less ▲]

Detailed reference viewed: 179 (12 UL)
Full Text
Peer Reviewed
See detailQuantification of surface ZnSe in Cu2ZnSnSe4-based solar cells by analysis of the spectral response
Colombara, Diego UL; Robert, Erika UL; Crossay, Alexandre UL et al

in Solar Energy Materials & Solar Cells (2014), 123

Absorber layers consisting of Cu2ZnSnSe4 (CZTSe) and surface ZnSe in variable ratios were prepared by selenization of electroplated Cu/Sn/Zn precursors and completed into full devices with up to 5.6 ... [more ▼]

Absorber layers consisting of Cu2ZnSnSe4 (CZTSe) and surface ZnSe in variable ratios were prepared by selenization of electroplated Cu/Sn/Zn precursors and completed into full devices with up to 5.6 % power conversion efficiency. The loss of short circuit current density for samples with increasing ZnSe content is consistent with an overall reduction of spectral response, pointing to a ZnSe current blocking behavior. A feature in the spectral response centered around 3 eV was identified and attributed to light absorption by ZnSe. A model is proposed to account for additional collection of the carriers generated underneath ZnSe capable of diffusing across to the space charge region. The model satisfactorily reproduces the shape of the spectral response and the estimated ZnSe surface coverage is in good qualitative agreement with analysis of the Raman spectral mapping. The model emphasizes the importance of the ZnSe morphology on the spectral response, and its consequences on the solar cell device performance. [less ▲]

Detailed reference viewed: 280 (10 UL)
See detailPhase segregation in Cu2ZnSnSe4 thin films for photovoltaic applications. The effects of precursor microstructure and selenium activity during selenization of electrodeposited metallic precursors.
Arasimowicz, Monika UL

Doctoral thesis (2014)

This thesis develops the synthesis of thin film copper-zinc-tin-selenide kesterite absorber layers, Cu2ZnSnSe4 (CZTSe), suitable for solar cell applications. The kesterites are highly sensitive to ... [more ▼]

This thesis develops the synthesis of thin film copper-zinc-tin-selenide kesterite absorber layers, Cu2ZnSnSe4 (CZTSe), suitable for solar cell applications. The kesterites are highly sensitive to stoichiometry deviations and most of the kesterite growth technologies suffer from the segregation of secondary phases, which can be detrimental to the performance of the solar cell. This thesis examines the phase segregation occurring during CZTSe absorber growth during a two-step electrodeposition – annealing process. A method towards reducing phase segregation in the CZTSe absorber is developed by manipulating the microstructure of Cu-Sn-Zn precursors and the annealing conditions. A power conversion efficiency improvement from 0 % to 5.94 % was possible by changing the microstructure of the metallic precursor from a bi-layered with Zn-rich alloy on the top to a matrix-type. This is explained by the higher reactivity of Zn with selenium vapour than Cu or Sn. The synthesis route used in this study consisted of three stages: sequential electrodeposition of Cu, Sn and Zn layers, soft pre-alloying of the resulting metallic stacks, and thermal annealing in the presence of selenium vapour. The pre-alloying step is introduced in order to develop uniform microstructure to the precursors by formation of Cu-Sn and Cu-Zn alloys. Depending on the stacking order of the metals in the electrodeposited precursors, two types of microstructure are developed during the pre-alloying process: a bi-layered structure with the Cu-Zn alloy on the top and the Cu-Sn alloy on the bottom and a matrix-type microstructure with the Zn-rich phase in the Sn-rich matrix. It is shown that the precursor microstructure determines the further segregation of phases during CZTSe growth. Using a rapid thermal annealing system (RTP) it is possible to resolve the mechanism of CZTSe formation at short time intervals. Identification and location of secondary phases is studied by four characterization techniques: XRD, Raman spectroscopy, SEM/EDX and SIMS. The influence of the partial pressure of selenium above the precursor on the CZTSe growth is investigated by theoretical computation and compared to experimental results. It is shown that the rate-limiting step of kesterite formation is the arrival of selenium species from the source to the precursor sample. This is correlated to the thermodynamic feasibility of the metal- vapour phase selenium reactions, since the selenium partial pressure above the sample will determine which phases are prone to form. The studies of the CZTSe formation mechanism show that Zn is the first metal to react with selenium vapour. This explains why the presence of Zn on the precursor surface enhances the ZnSe phase segregation during the CZTSe growth. [less ▲]

Detailed reference viewed: 351 (16 UL)
Full Text
Peer Reviewed
See detailHCl and Br2-MeOH etching of Cu2ZnSnSe4 polycrystalline absorbers
Mousel, Marina UL; Redinger, Alex UL; Djemour, Rabie UL et al

in Thin Solid Films (2013), 535

Detailed reference viewed: 160 (8 UL)
Full Text
Peer Reviewed
See detailThe Effect of Soft Pre-Annealing of Differently Stacked Cu-Sn-Zn Precursors on the Quality of Cu2ZnSnSe4 Absorbers
Arasimowicz, Monika UL; Thevenin, Maxime UL; Dale, Phillip UL

in Materials Research Society Symposia Proceedings. (2013), 1538

Detailed reference viewed: 144 (11 UL)