231090
doi
10.1016/j.tsf.2016.09.040
oai:zenodo.org:231090
Effect of Sn/Zn/Cu precursor stack thickness on two-step processed kesterite solar cells
Samaneh Ranjbar, Guy Brammertz, Bart Vermang, Afshin Hadipour, M. Sylvester, Aniket Mule, Marc Meuris, A.F. da Cunha, Jef Poortmans
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
<p>We have fabricated Cu<sub>2</sub>ZnSnSe<sub>4</sub> (CZTSe) solar cells with different absorber layer thickness. Absorber layers with different thicknesses were fabricated by changing the thickness of e-beam evaporated Sn/Zn/Cu precursor stacks and then selenization in a rapid thermal processing system. Scanning electron microscopy revealed that by increasing the thickness the morphology of CZTSe films improves substantially and energy dispersive spectrometry measurements showed that the Cu to Sn ratio increased with increasing the film thickness, despite a similar Cu to Sn ratio in the starting layers. A longer minority carrier lifetime and higher open circuit voltage were achieved for solar cells with thicker absorber layers. A maximum conversion efficiency of 7.8% (without anti reflection coating) was achieved for a solar cell with 1.7 μm thickness in which a low doping density of the order of 10<sup>15</sup> cm<sup>− 3</sup> was measured, leading to a wide space charge region of about 300 nm.</p>
Pre-print
Zenodo
2016-09-21
info:eu-repo/semantics/article
717055
award_title=Development of thin film Solar cells based on WIde band Gap kesterite absorbers; award_number=640868; award_identifiers_scheme=url; award_identifiers_identifier=https://cordis.europa.eu/projects/640868; funder_id=00k4n6c32; funder_name=European Commission;
1579533059.556554
1095975
md5:37c0dac9aad35526f7ecc0a8e27e733e
https://zenodo.org/records/231090/files/RANJBAR_RCJI6-20160804.pdf
public
Thin Solid Films
2016-09-21