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Continuous, crystalline Sb2S3 ultrathin light absorber coatings in solar cells based on photonic concentric p-i-n heterojunctions by Pascal Büttner; Florian Scheler; Dirk Döhler; Maïssa K.S. Barr; Michael Bosch; Marcel Rey; Tadahiro Yokosawa; Sandra Hinz; Janina Maultzsch; Erdmann Spiecker; Nicolas Vogel; Ignacio Mínguez-Bacho; Julien Bachmann is a Engineering article available to read on EtoBox.
What is Continuous, crystalline Sb2S3 ultrathin light absorber coatings in solar cells based on photonic concentric p-i-n heterojunctions about?
Many modern types of solar cells that rely exclusively on earth-abundant non-toxic materials include interfaces between a heavier metal chalcogenide and another type of semiconductor. Often, the chemical (adhesion) and physical (charge transfer) characteristics of those interfaces are the defining factors for the final device performance. Here, we describe that a ZnS adhesion layer is not sufficient to prevent the dewetting of Sb2S3 upon annealing a thin layer of it on an oxidic surface if the substrate is not planar and features highly curved surfaces. An ALD-coated sacrificial capping layer of ZnO prevents the morphological rearrangements of Sb2S3 during thermal crystallization and can be removed subsequently. When implemented towards a photovoltaic p-i-n heterojunction, this strategy furnishes perfect conformality of the layer stack but unsatisfactory performance. The correlation of interface chemistry with the electrical properties and the device performance identifies a reducing effect of ZnO atomic layer deposition chemistry on the Sb2S3 surface as the cause of Zn diffusion into the light absorbing semiconductor. This deleterious doping can be prevented by a preliminary oxida
Who reads Continuous, crystalline Sb2S3 ultrathin light absorber coatings in solar cells based on photonic concentric p-i-n heterojunctions?
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- Author
- Pascal Büttner; Florian Scheler; Dirk Döhler; Maïssa K.S. Barr; Michael Bosch; Marcel Rey; Tadahiro Yokosawa; Sandra Hinz; Janina Maultzsch; Erdmann Spiecker; Nicolas Vogel; Ignacio Mínguez-Bacho; Julien Bachmann
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)