Band Structure Engineering of Multinary Chalcogenide Topological Insulators
, 2011 Topological insulators (TIs) have been found in strained binary HgTe and ternary I-III-VI2 chalcopyrite compounds such as CuTlSe2 which have inverted band structures. However, the non-trivial band gaps of these existing binary and ternary TIs are limited
Chen, Shiyou +8 more
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Non stoichiometry effect and disorder in Cu2ZnSnS4 thin films obtained by flash evaporation Raman scattering investigation [PDF]
, 2014 The cation disorder in Cu2ZnSnS4 thin films grown by flash evaporation of ZnS, CuS and SnS binary compounds has been studied by Raman spectroscopy. Process parameters such as the substrate temperature during the evaporation and the Ar pressure in the ...
Babichuk, I. +7 more
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Effects of potassium on kesterite solar cells: Similarities, differences and synergies with sodium
AIP Advances, 2018 Addition of alkali dopants is essential for achieving high-efficiency conversion efficiency of thin film solar cells based on chalcogenide semiconductors like Cu(In,Ga)Se2 (CIGS) and Cu2ZnSn(S,Se)4 (CZTSSe also called kesterite).
S. G. Haass +6 more
doaj +1 more source
Thermal and electrical conductivity of single crystalline kesterite Cu2ZnSnS4
Materials Research Express, 2020 For single crystalline sulfur-based kesterite Cu _2 ZnSnS _4 the electrical and thermal conductivity are measured from 20 K to 320 K. The electrical conductivity decreases exponentially with decreasing temperature.
M Handwerg +4 more
doaj +1 more source
Cation Substitution in Earth‐Abundant Kesterite Photovoltaic Materials [PDF]
Advanced Science, 2018 AbstractAs a promising candidate for low‐cost and environmentally friendly thin‐film photovoltaics, the emerging kesterite‐based Cu2ZnSn(S,Se)4 (CZTSSe) solar cells have experienced rapid advances over the past decade. However, the record efficiency of CZTSSe solar cells (12.6%) is still significantly lower than those of its predecessors Cu(In,Ga)Se2 ...
Li, J, Wang, D, Li, X, Zeng, Y, Zhang, Y
openaire +3 more sources
Improving the efficiency of kesterite solar cells using semi-ellipsoidal nanostructures
Next EnergyThe use of kesterite materials in photovoltaic solar cells holds great promise due to their abundance, non-toxic nature, cost-effectiveness, and excellent optoelectronic properties.
Sarah Youssef +2 more
doaj +1 more source
The Effect of Cu Zn Disorder on Charge Carrier Mobility and Lifetime in Cu2ZnSnSe4 [PDF]
, 2018 Cu Zn disorder is one possible origin for the limited efficiencies of kesterite solar cells and its impact on the band gap and band tails have been intensively studied.
Eichberger, R. +3 more
core +2 more sources
High-field hopping magnetotransport in kesterites
Journal of Magnetism and Magnetic Materials, 2018 Abstract Transport properties of the kesterite-like single crystals of Cu2ZnSnS4, Cu2ZnSnxGe1−xSe4 and Cu2ZnGeS4 are investigated in pulsed magnetic fields up to B = 20 T. The Mott variable-range hopping (VRH) conduction is established by investigations of the resistivity, ρ (T), in all the materials mentioned above within broad temperature intervals
E. Lähderanta +7 more
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JPhys EnergyKesterite-structured solar cells have drawn significant attention due to their low-cost and environmental friendly composition. Recently, a remarkable certified power conversion efficiency (PCE) of 14.9% has been achieved, indicating a broader prospect ...
Yue Liu, Siyu Wang, Yi Zhang
doaj +1 more source
Cu2ZnSnS4 thin film solar cells grown by fast thermal evaporation and thermal treatment [PDF]
, 2018 Cu2ZnSnS4 thin films have been produced via rapid thermal evaporation of off-stoichiometric kesterite powder followed by annealing in an Ar atmosphere. Different heating rates were applied during the thermal treatments.
Caballero, Raquel +11 more
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