Low Temperature, Vacuum‐Processed Bismuth Triiodide Solar Cells with Organic Small‐Molecule Hole Transport Bilayer. Issue 12 (5th November 2021)

• Record Type: Journal Article
• Authors: Sebastia-Luna, Paz; Sessolo, Michele; Palazon, Francisco; Bolink, Henk J.
• Is Part Of: Energy technology. Volume 9:Issue 12(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-11-05
• Subjects: bismuth -- organic bilayer -- photovoltaics -- vacuum-processing; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.202100661
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : Herein, the preparation of fully vacuum‐processed bismuth triiodide solar cells with low annealing temperature is reported. Planar n‐i‐p devices are prepared using a thin compact SnO2 layer as the electron extraction layer and an electron blocking/hole extraction bilayer consisting of an intrinsic and doped organic hole‐transport molecule. Using this configuration, herein, higher fill‐factors and overall power conversion efficiencies than with conventional solution‐processed hole transport materials are achieved. Abstract : Fully vacuum processed bismuth triiodide solar cells are fabricated. Combining a compact tin oxide electron transport layer grown by atomic layer deposition and a thermally evaporated electron blocking/hole transport organic bilayer, high fill‐factors and close‐to‐record power conversion efficiencies are obtained.