Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process

Abstract The influence of Na diffusion from various glass substrates during a high-temperature slenization process on the microstructure and morphology of two-step formed CIGS absorber layers is investigated. In order to minimise the CIGS absorber formation time, elemental Se vapour is used to prepa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Weimin Li, Xia Yan, Armin G. Aberle, Selvaraj Venkataraj
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/93e7ce8e979a42148060ccb1f27728d2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:93e7ce8e979a42148060ccb1f27728d2
record_format	dspace
spelling	oai:doaj.org-article:93e7ce8e979a42148060ccb1f27728d22021-12-02T15:09:33ZEffect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process10.1038/s41598-019-39283-22045-2322https://doaj.org/article/93e7ce8e979a42148060ccb1f27728d22019-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-39283-2https://doaj.org/toc/2045-2322Abstract The influence of Na diffusion from various glass substrates during a high-temperature slenization process on the microstructure and morphology of two-step formed CIGS absorber layers is investigated. In order to minimise the CIGS absorber formation time, elemental Se vapour is used to prepare the CIGS absorber. The grain sizes of the CIGS films are found to increase with increasing sodium in the glass substrates (extra clear glass, soda-lime glass, borosilicate glass). TiN and SiN thin films are used as diffusion barrier layers inserted between the glass substrate and the Mo rear conatct to tune the Na diffusion from the soda-lime glass. The interdiffusion between the In-rich CuInSe2 surface layer and the Ga-rich CuGaSe2 layer is promoted by the barrier layer, leading to larger CIGS grains. Efforts are also taken to understand the differences in Na diffusion (from the glass substrates) and their effects on the MoSe2 intermediate layer formation during the high-temperature CIGS absorber formation processes. We find that excess amounts of Na and Se are essential for the MoSe2 growth. The excessive Na in the form of Na2Sex at the CIGS/Mo interface works as a Se source and catalyses the MoSe2 formation. The Se flow in the two-step CIGS formation process must be sufficiently high to obtain high-efficiency CIGS solar cells.Weimin LiXia YanArmin G. AberleSelvaraj VenkatarajNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Weimin Li Xia Yan Armin G. Aberle Selvaraj Venkataraj Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
description	Abstract The influence of Na diffusion from various glass substrates during a high-temperature slenization process on the microstructure and morphology of two-step formed CIGS absorber layers is investigated. In order to minimise the CIGS absorber formation time, elemental Se vapour is used to prepare the CIGS absorber. The grain sizes of the CIGS films are found to increase with increasing sodium in the glass substrates (extra clear glass, soda-lime glass, borosilicate glass). TiN and SiN thin films are used as diffusion barrier layers inserted between the glass substrate and the Mo rear conatct to tune the Na diffusion from the soda-lime glass. The interdiffusion between the In-rich CuInSe2 surface layer and the Ga-rich CuGaSe2 layer is promoted by the barrier layer, leading to larger CIGS grains. Efforts are also taken to understand the differences in Na diffusion (from the glass substrates) and their effects on the MoSe2 intermediate layer formation during the high-temperature CIGS absorber formation processes. We find that excess amounts of Na and Se are essential for the MoSe2 growth. The excessive Na in the form of Na2Sex at the CIGS/Mo interface works as a Se source and catalyses the MoSe2 formation. The Se flow in the two-step CIGS formation process must be sufficiently high to obtain high-efficiency CIGS solar cells.
format	article
author	Weimin Li Xia Yan Armin G. Aberle Selvaraj Venkataraj
author_facet	Weimin Li Xia Yan Armin G. Aberle Selvaraj Venkataraj
author_sort	Weimin Li
title	Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
title_short	Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
title_full	Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
title_fullStr	Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
title_full_unstemmed	Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process
title_sort	effect of sodium diffusion on the properties of cigs solar absorbers prepared using elemental se in a two-step process
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/93e7ce8e979a42148060ccb1f27728d2
work_keys_str_mv	AT weiminli effectofsodiumdiffusiononthepropertiesofcigssolarabsorberspreparedusingelementalseinatwostepprocess AT xiayan effectofsodiumdiffusiononthepropertiesofcigssolarabsorberspreparedusingelementalseinatwostepprocess AT armingaberle effectofsodiumdiffusiononthepropertiesofcigssolarabsorberspreparedusingelementalseinatwostepprocess AT selvarajvenkataraj effectofsodiumdiffusiononthepropertiesofcigssolarabsorberspreparedusingelementalseinatwostepprocess
_version_	1718387828901019648

Effect of sodium diffusion on the properties of CIGS solar absorbers prepared using elemental Se in a two-step process

Ejemplares similares