Results 171 to 180 of about 1,965 (210)

Grain growth of CZTSSe via nanocrystal selenization

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), 2013
Achieving micro-sized and closed packed grains is an essential requirement for high performance chalcogenide thin film solar cells. The grain growth mechanism of CZTSSe starting from nanocrystal films appears to be affected by the capping ligands composed of long hydrocarbon chains.
Wan-Ching Hsu, Huanping Zhou, Song Luo, Shenglin Ye, Tze-Bin Song, Yang Yang   +5 more
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Characterization of printed CZTSSe films for photovoltaic applications

SPIE Proceedings, 2013
Cu2ZnSn(S, Se)4 (CZTSSe) is a promising alternative absorber material for thin-film photovoltaic applications because of its earth-abundant constituents, tunable band gap, and high optical absorption coefficient. Using binary and ternary chalcogenide nanoparticles as precursors we have developed a chemical route to produce high efficiency CZTSSe ...
Wei Wu, Yanyan Cao, Jonathan V. Caspar, Qijie Guo, Lynda Johnson, Irina Malajovich, H. David Rosenfeld, Kaushik Roy Choudhury, Lee Silverman   +8 more
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CZTSe devices fabricated from CZTSSe nanoparticles

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), 2013
To understand and control the growth paths of kesterite based CZTSe films as prepared from kesterite nanoparticles we investigate films prepared from different chalcogenide ratios in the initial nanoparticles. To do so we introduce a new method for producing kesterite nanocrystals with controlled ratios of sulfur and selenium.
Bryce C. Walker, Bethlehem G. Negash, Stephen M. Szczepaniak, Kevin W. Brew, Rakesh Agrawal   +4 more
openaire   +1 more source

Synthesis and characterization of CZTSSe nanoparticle inks for photovoltaic devices

physica status solidi c, 2015
AbstractCu2ZnSnSe4 (CZTSe) is one of the promising materials as absorber layers in thin film solar cells. It contains earth abundant and non‐toxic elements. With a broad optical band gap at 1.5 eV as well as a high absorbance coefficient of 10–4 cm–1, CZTS is also a good light harvesting material.
Ridvan Ergun, Cagdas Calli, Elif Arici
openaire   +1 more source

Development of photovoltaic ceramic tile based on CZTSSe absorber

Materials Letters, 2015
Abstract Ceramic photovoltaic tile based on Cu2ZnSn(S,Se)4 semiconductor has been made by low-cost and easy processing method of preparation. Ceramic tile as alternative of soda-lime glass substrate has been used. The molybdenum thin film was integrated into the ceramic enamel as a back contact.
Calvet Roures, Iván, Barrachina Albert, Ester, Martí Valls, Rafael Francisco, Fraga Chiva, Diego, Lyubenova, Teodora, Carda Castelló, Juan Bautista   +5 more
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Enhancing the performance of CZTSSe solar cells with Ge alloying

Solar Energy Materials and Solar Cells, 2012
Abstract The ability to alloy Cu2ZnSn(S,Se)4 with Ge provides a unique ability to band-gap engineer the absorber film by controlling the relative cation ratios. In here, a preliminary study on adjusting the Ge to Sn ratio is shown to significantly improve the device performance of CZTSSe thin film solar cells.
Qijie Guo, Grayson M. Ford, Wei-Chang Yang, Charles J. Hages, Hugh W. Hillhouse, Rakesh Agrawal   +5 more
openaire   +1 more source

Optimization of Silver-alloying for improved photovoltaic properties of CZTSSe

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), 2016
Cu 2 ZnSn(S x Se 1−x ) 4 (CZTSSe) photovoltaic devices are primarily limited by low open-circuit voltages, believed to be caused in part by disorder on the Cu/Zn sublattice. We show that band tailing in the absorber can be addressed by alloying Ag into CZTSSe to replace Cu.
Douglas Bishop, Talia Gershon, Yun Seog Lee, Priscilla Antunez, Ravin Mankad, Saurabh Singh, Oki Gunawan, Richard Haight   +7 more
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Effect of HCl and NH4OH etching on CZTSSe absorber layer

Vacuum, 2018
Abstract Cu2ZnSn (SxSe1-x)4 thin films were deposited on glass substrates using the screen printing method. The structural, compositional and surface morphology characteristics were studied using XRD, EDXRF and Scanning electron microscopy (SEM) to determine its crystal, composition and surface morphology. The XRD pattern shows the presence of binary
Vishvas kumar, Srinibasa Padhy, Arindam Basak, Udai P. Singh   +3 more
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Device limitations and light-soaking effects in CZTSSe and CZTGeSSe

2012 38th IEEE Photovoltaic Specialists Conference, 2012
Advancements in thin film Cu 2 ZnSn(S x Se 1−x ) 4 (CZTSSe) solar cells have recently achieved power conversion efficiencies >10%, indicating the potential of this low cost, earth abundant material system as a viable alternative to CIGS and CdTe absorbers [1].
Charles J. Hages, James Moore, Sourabh Dongaonkar, Muhammad Alam, Mark Lundstrom, Rakesh Agrawal   +5 more
openaire   +1 more source

Unconventional kesterites: The quest to reduce band tailing in CZTSSe

Current Opinion in Green and Sustainable Chemistry, 2017
This review summarizes current understanding of the band tailing problem in Cu2ZnSn(S,Se)4, which is believed to be an important part of photovoltaic performance losses. Highlights of recent research are presented, which show that despite best efforts at process optimization, a minimum of 30% disorder is present on the Cu–Zn plane in the material, and ...
Talia Gershon, Doug Bishop, Priscilla Antunez, Saurabh Singh, Kevin W. Brew, Yun Seog Lee, Oki Gunawan, Tayfun Gokmen, Teodor Todorov, Richard Haight   +9 more
openaire   +1 more source