Results 171 to 180 of about 1,058 (204)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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

A method to improve crystal quality of CZTSSe absorber layer

Journal of Sol-Gel Science and Technology, 2018
In this work, a fabrication process of high crystallinity CZTSSe absorber layer is presented. The CZTS structure is firstly prepared by spin-coating method then the film is converted into CZTSSe via selenization process using graphite box and tube furnace. Se powder has been used as source of selenizing vapors.
Dao Anh Tuan, Nguyen Huu Ke, Phan Thi Kieu Loan, Le Vu Tuan Hung   +3 more
openaire   +1 more source

Fabrication of 7.2% Efficient CZTSSe Solar Cells Using CZTS Nanocrystals

Journal of the American Chemical Society, 2010
Earth abundant copper-zinc-tin-chalcogenide (CZTSSe) is an important class of material for the development of low cost and sustainable thin film solar cells. The fabrication of CZTSSe solar cells by selenization of CZTS nanocrystals is presented. By tuning the composition of the CZTS nanocrystals and developing a robust film coating method, a total ...
Qijie, Guo, Grayson M, Ford, Wei-Chang, Yang, Bryce C, Walker, Eric A, Stach, Hugh W, Hillhouse, Rakesh, Agrawal   +6 more
openaire   +2 more sources