230920
doi
10.1016/j.tsf.2016.09.049
oai:zenodo.org:230920
user-eu
Bart Vermang
imec
Hossam ElAnzeery
imec
Sylvester Sahayraj
imec
Samaneh Ranjbar
imec
Marc Meuris
imec
Jef Poortmans
imec
Fabrication and characterization of ternary Cu8SiS6 and Cu8SiSe6 thin film layers for optoelectronic applications
Guy Brammertz
imec
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Cu8SiS6; Cu8SiSe6; Characterization; Thin film layers; Solar cell; Photoluminescence; Optoelectronics
<p>We have fabricated and characterized Cu<sub>8</sub>SiS<sub>6</sub> and Cu<sub>8</sub>SiSe<sub>6</sub> thin film layers for optoelectronic applications. The layers were fabricated using a two step process by first evaporating a bilayer of Cu/Si on a Mo/glass substrate, followed by an anneal at temperatures in excess of 480 °C in a H<sub>2</sub>S or H<sub>2</sub>Se containing atmosphere. Different process conditions with different Cu starting layer thickness, different H<sub>2</sub>S partial pressure and different anneal temperatures and times were evaluated. The best fabricated layers were thin polycrystalline layers with a relatively low amount of secondary phases. Relatively intense photoluminescence signals with a full width at half maximum of about 150 meV could be measured on the samples with a peak position of 1.84 and 1.33 eV for the Cu<sub>8</sub>SiS<sub>6</sub> and Cu<sub>8</sub>SiSe<sub>6</sub> materials respectively. The absorption coefficient of the Cu<sub>8</sub>SiS<sub>6</sub> layer was determined from absorption and reflection measurements and was larger than 10<sup>4</sup> cm<sup>− 1</sup> at energies above 1.8 eV. Solar cells could not be fabricated so far, because the material appears to be very highly doped, leading to large ohmic leakage behavior in the fabricated solar cell structures.</p>
Zenodo
2016-10-01
info:eu-repo/semantics/article
716319
user-eu
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;
1579532239.205439
1897374
md5:37311bbea4fdd77e926fda6ea6e9579c
https://zenodo.org/records/230920/files/20160915_Brammertz_Cu8SiSSe6_TSF_2016_PREPRINT.pdf
public