Results 51 to 60 of about 4,053 (214)

First-principles study on the effective masses of zinc-blend-derived Cu_2Zn-IV-VI_4 (IV = Sn, Ge, Si and VI = S, Se)

, 2012
The electron and hole effective masses of kesterite (KS) and stannite (ST) structured Cu_2Zn-IV-VI_4 (IV = Sn, Ge, Si and VI = S, Se) semiconductors are systematically studied using first-principles calculations.
Chen, Shiyou, Gong, X. G., Liu, Heng-Rui, Wei, Su-Huai, Xiang, H. J., Zhai, Ying-Teng   +5 more
core   +1 more source

Scalable heating-up synthesis of monodisperse Cu2ZnSnS4 nanocrystals [PDF]

, 2016
Monodisperse Cu2ZnSnS4 (CZTS) nanocrystals (NCs), with quasi spherical shape, were prepared by a facile, high-yield, scalable, and high-concentration heat-up procedure.
Arbiol, Jordi, Cabot, Andreu, Carrete, Alex, De Roo, Jonathan, Dimitrievska, Mirjana, Genc, Aziz, Ibanez, Maria, Kovalenko, Maksym V, Luo, Zhishan, Meyns, Michaela, Perez-Rodriguez, Alejandro, Shavel, Alexey   +11 more
core   +3 more sources

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., Hempel, H., Repins, I., Unold, T.   +3 more
core   +2 more sources

High efficiency titanium nitride bowtie nanoparticle and upconverter layer incorporated kesterite tandem solar cell

Results in Physics, 2023
Thin-film photovoltaic (PV) technology offers an economically viable and flexible way to harness solar energy. Using a material that absorbs more solar light than silicon significantly reduces material consumption and costs.
Nowshin Akhtary, Ahmed Zubair
doaj   +1 more source

Temperature dependent transient surface photovoltage spectroscopy of a Cu1.95Zn1.1Sn0.96Se4 kesterite single phase powder [PDF]

, 2017
An off-stoichiometric but single phase Cu1.95Zn1.1Sn0.96Se4 kesterite powder was investigated by temperature dependent transient surface photovoltage (SPV) spectroscopy.
Dittrich, Th., Gurieva, G., Kapil, S., Rios, L. E. Valle, Rujisamphan, N., Schorr, S.   +5 more
core   +1 more source

Improving the efficiency of kesterite solar cells using semi-ellipsoidal nanostructures

Next Energy
The 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, Nouran M. Ali, Nadia H. Rafat   +2 more
doaj   +1 more source

Band Gap Tuning of Cu2ZnGeSxSe4-x Absorbers for Thin-Film Solar Cells

Energies, 2017
In this work, kesterite-type Cu2ZnGeSxSe4-x absorbers were prepared by a two-step process for use in thin-film solar cells. Their high band gap makes them an interesting candidate as top cells in multijunction solar cells. However, an exact tuning of the
Thomas Schnabel, Mahmoud Seboui, Erik Ahlswede   +2 more
doaj   +1 more source

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, K. Lisunov, M.A. Shakhov, M. Guc, E. Hajdeu-Chicarosh, S. Levcenko, I. Zakharchuk, E. Arushanov   +7 more
openaire   +3 more sources

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, Chu, Jun-Hao, Duan, Chun-Gang, Gong, X. G., Ma, Jie, Walsh, Aron, Wei, Su-Huai, Yao, Yu-Gui, Zhu, Zi-Qiang   +8 more
core   +1 more source

Wide band-gap tuning Cu2ZnSn1-xGexS4 single crystals: Optical and vibrational properties [PDF]

, 2019
The linear optical properties of Cu2ZnSn1-xGe x S4 high quality single crystals with a wide range of Ge contents (x=0.1, 0.3, 0.5, 0.7, 0.9 and 1) have been investigated in the ultraviolet and near infrared range using spectroscopic ellipsometry ...
Bodnar, I.V., Caballero, Raquel, Fontané, X., García-Llamas, E., Izquierdo-Roca, V., León, M., Merino, J.M., Pérez-Rodríguez, A., Serna, R, Victorov, I.   +9 more
core   +1 more source