{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Deo M"],"funding":["Helmholtz Association of German Research Centres","Deutsche Forschungsgemeinschaft","Science and Engineering Research Board"],"pagination":["780"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8912079"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["12(5)"],"pubmed_abstract":["Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal-halide perovskite solar cells. Amorphous tantalum oxide (Ta<sub>2</sub>O<sub>5</sub>) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta<sub>2</sub>O<sub>5</sub> layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 10<sup>18</sup>/cm<sup>3</sup> in amorphous Ta<sub>2</sub>O<sub>5</sub> films, is a potentially competitive candidate for an electron transport material in perovskite solar cells."],"journal":["Nanomaterials (Basel, Switzerland)"],"pubmed_title":["Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells."],"pmcid":["PMC8912079"],"funding_grant_id":["SPP2196","SERB-Overseas postdoc fellowship scheme","PEROSEED"],"pubmed_authors":["Tachibana Y","Mathur S","Haddad J","Kulkarni A","Stadler D","Unlu F","Liu M","Deo M","Bhardwaj A","Mollmann A","Ludwig T","Kirchartz T"],"additional_accession":[]},"is_claimable":false,"name":"Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells.","description":"Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal-halide perovskite solar cells. Amorphous tantalum oxide (Ta<sub>2</sub>O<sub>5</sub>) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta<sub>2</sub>O<sub>5</sub> layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 10<sup>18</sup>/cm<sup>3</sup> in amorphous Ta<sub>2</sub>O<sub>5</sub> films, is a potentially competitive candidate for an electron transport material in perovskite solar cells.","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Feb","modification":"2026-06-19T03:08:08.941Z","creation":"2025-04-05T20:50:01.479Z"},"accession":"S-EPMC8912079","cross_references":{"pubmed":["35269269"],"doi":["10.3390/nano12050780"]}}