Low-Temperature Solution-Processed Kesterite Solar Cell Based on in Situ Deposition of Ultrathin Absorber Layer

Journal article
(Original article)


Publication Details

Author(s): Hou Y, Azimi SH, Gasparini N, Savador M, Chen W, Khanzada LS, Brandl M, Hock R, Brabec C
Journal: ACS Applied Materials and Interfaces
Publication year: 2015
Volume: 7
Journal issue: 38
Pages range: 21100-21106
ISSN: 1944-8244
eISSN: 1944-8252
Language: English


Abstract


The production of high-performance, solution-processed kesterite Cu2ZnSn(Sx,Se1-x)4 (CZTSSe) solar cells typically relies on high-temperature crystallization processes in chalcogen-containing atmosphere and often on the use of environmentally harmful solvents, which could hinder the widespread adoption of this technology. We report a method for processing selenium free Cu2ZnSnS4 (CZTS) solar cells based on a short annealing step at temperatures as low as 350 °C using a molecular based precursor, fully avoiding highly toxic solvents and high-temperature sulfurization. We show that a simple device structure consisting of ITO/CZTS/CdS/Al and comprising an extremely thin absorber layer (∼110 nm) achieves a current density of 8.6 mA/cm2. Over the course of 400 days under ambient conditions encapsulated devices retain close to 100% of their original efficiency. Using impedance spectroscopy and photoinduced charge carrier extraction by linearly increasing voltage (photo-CELIV), we demonstrate that reduced charge carrier mobility is one limiting parameter of low-temperature CZTS photovoltaics. These results may inform less energy demanding strategies for the production of CZTS optoelectronic layers compatible with large-scale processing techniques.



FAU Authors / FAU Editors

Azimi, Seyed Hamed Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Brandl, Marco
Lehrstuhl für Kristallographie und Strukturphysik
Chen, Wei
Institute Materials for Electronics and Energy Technology (i-MEET)
Gasparini, Nicola
Institute Materials for Electronics and Energy Technology (i-MEET)
Hock, Rainer Prof. Dr.
Professur für Kristallographie und Strukturphysik
Hou, Yi
Institute Materials for Electronics and Energy Technology (i-MEET)
Khanzada, Laraib Sarfraz
Institute Materials for Electronics and Energy Technology (i-MEET)


How to cite

APA:
Hou, Y., Azimi, S.H., Gasparini, N., Savador, M., Chen, W., Khanzada, L.S.,... Brabec, C. (2015). Low-Temperature Solution-Processed Kesterite Solar Cell Based on in Situ Deposition of Ultrathin Absorber Layer. ACS Applied Materials and Interfaces, 7(38), 21100-21106. https://dx.doi.org/10.1021/acsami.5b04468

MLA:
Hou, Yi, et al. "Low-Temperature Solution-Processed Kesterite Solar Cell Based on in Situ Deposition of Ultrathin Absorber Layer." ACS Applied Materials and Interfaces 7.38 (2015): 21100-21106.

BibTeX: 

Last updated on 2019-15-05 at 10:33