Cu2ZnSnSe4 absorbers processed from solution deposited metal salt precursors under different selenization conditions
Reads0
Chats0
TLDR
In this paper, the loss of tin is investigated with respect to the influence of the selenization conditions such as substrate temperature and selenium partial pressure on the remaining decomposed layer.Abstract:
Cu2ZnSnSe4 (CZTSe) thin film solar cells are fabricated by a simple, non-vacuum deposition of metal salts dissolved in non-hazardous solvents followed by selenization in Se atmosphere. Despite a residual carbon-rich layer between the back contact and the CZTSe absorber layer, solar cells with up to 4.28% conversion efficiency are obtained for Cu-poor and Zn-rich CZTSe absorbers. A frequently reported problem, the loss of tin, is investigated with respect to the influence of the selenization conditions such as substrate temperature and selenium partial pressure. EDX point measurements directly confirm that the remaining decomposed layer consists of a mixture of binary ZnSe and Cu2−xSe phases if the substrate temperature is too high and not sufficient Se is supplied.read more
Citations
More filters
Journal ArticleDOI
Effect of solid-H2S gas reactions on CZTSSe thin film growth and photovoltaic properties of a 12.62% efficiency device
Dae-Ho Son,Seung-Hyun Kim,Se-Yun Kim,Young-Ill Kim,Jun-Hyung Sim,Si-Nae Park,Dong-Hwan Jeon,Dae-Kue Hwang,Shi-Joon Sung,Jin-Kyu Kang,Kee-Jeong Yang,Dae-Hwan Kim +11 more
TL;DR: In this paper, a CZTSSe thin film was fabricated using optimized SLG-Mo/Zn/Cu/Sn (MZCT) as a stacked structure and described the phenomenon of Zn elemental volatilization using the MZCT stacked structure.
Journal ArticleDOI
Cation Substitution in Earth-Abundant Kesterite Photovoltaic Materials.
TL;DR: Examination of recent efforts to overcome the V OC limit of kesterite solar cells by cation substitution is examined to further illuminate several emerging prospective strategies, including suppressing the cation disordering by distant isoelectronic cation substituted, optimizing the junction band alignment and constructing a graded bandgap in absorber.
Journal ArticleDOI
ZnSe etching of Zn-rich Cu2ZnSnSe4: an oxidation route for improved solar-cell efficiency.
Simón López-Marino,Yudania Sánchez,Marcel Placidi,Andrew Fairbrother,Moises Espindola-Rodriguez,Xavier Fontané,Victor Izquierdo-Roca,Juan López-García,Lorenzo Calvo-Barrio,Alejandro Pérez-Rodríguez,Alejandro Pérez-Rodríguez,Edgardo Saucedo +11 more
TL;DR: A new oxidizing route to ensure efficient removal of ZnSe is presented based on treatment with a mixture of an oxidizing agent and a mineral acid followed by treatment in an aqueous Na2S solution, with a large improvement on the conversion efficiency of the devices and an improvement of all the optoelectronic parameters of the cells.
Journal ArticleDOI
Vacuum-free preparation of 7.5% efficient Cu2ZnSn(S,Se)4 solar cells based on metal salt precursors
TL;DR: A solution-based preparation route for 7.5% efficient thin-film solar cells with a kesterite-type Cu2ZnSn(S,Se)4 absorber is reported that allows low carbon residues after a rapid selenization step as discussed by the authors.
Journal ArticleDOI
Secondary crystalline phases identification in Cu $$_2$$ 2 ZnSnSe $$_4$$ 4 thin films: contributions from Raman scattering and photoluminescence
Pedro M. P. Salomé,Paulo Fernandes,Joaquim P. Leitão,Marta G. Sousa,Jennifer P. Teixeira,António F. da Cunha +5 more
TL;DR: In this paper, the Raman peak positions of the quaternary pure selenide compound CZTSe and related secondary phases that were grown and studied under the same conditions were presented.
References
More filters
Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
High‐Efficiency Solar Cell with Earth‐Abundant Liquid‐Processed Absorber
TL;DR: A non-vacuum, slurry-based coating method that combines advantages of both solution processing and particlebased deposition is shown, enabling fabrication of Cu2ZnSn(Se,S)4 devices with over 9.6% efficiency—a factor of five performance improvement relative to previous attempts to use highthroughput ink-based approaches and >40% higher than previous record devices prepared using vacuum-based methods.
Journal ArticleDOI
Device characteristics of a 10.1% hydrazine-processed Cu2ZnSn(Se,S)4 solar cell
TL;DR: In this article, a power conversion efficiency record of 10.1% was achieved for kesterite absorbers, using a Cu2ZnSn(Se,S)4 thin-film solar cell made by hydrazine-based solution processing.
Journal ArticleDOI
The Consequences of Kesterite Equilibria for Efficient Solar Cells
TL;DR: It is shown that understanding the formation reaction of the kesterite absorber is the key to control the growth process and to drastically improve the solar cell efficiency and it is demonstrated that this knowledge can be used to simplify the four-dimensional parameter space to an easy and robust two-dimensional process.
Journal ArticleDOI
Chemical Insights into the Instability of Cu(2)ZnSnS(4) Films during Annealing
TL;DR: In this article, the loss of Sn as a result of decomposition and evaporat decomposition was identified during the synthesis of CZTS films, which shows great potential for cheap, efficient photovoltaic devices.