ELECTROCHEMICAL STUDY OF CuSCN INORGANIC HOLE-TRANSPORT MATERIAL FOR SOLAR CELLS PREPARED BY ELECTRODEPOSITION FROM AQUEOUS SOLUTION

0541656 - ÚFCH JH 2022 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Vlčková Živcová, Zuzana - Mansfeldová, Věra - Bouša, Milan - Kavan, Ladislav
ELECTROCHEMICAL STUDY OF CuSCN INORGANIC HOLE-TRANSPORT MATERIAL FOR SOLAR CELLS PREPARED BY ELECTRODEPOSITION FROM AQUEOUS SOLUTION.
Conference Proceedings - NANOCON 2020. 12th International Conference on Nanomaterials - Research & Application. Ostrava: Tanger Ltd., 2021, s. 177-182. ISBN 978-80-87294-98-7.
[International Conference NANOCON 2020 /12./. Brno (CZ), 21.10.2020-23.10.2020]
Grant CEP: GA ČR(CZ) GA18-08959S
Institucionální podpora: RVO:61388955
Klíčová slova: electrodeposition * CuSCN * hole transport material
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

A comparative study is reported for electrodeposited copper(I) thiocyanate layers (ca. 500 nm) on two types of conductive/semiconductive substrates: i) carbon (boron-doped diamond_BDD, glass-like carbon_GC), and ii) carbon-free F-doped SnO2 conducting glass (FTO). SEM and Raman evidence that electrodeposition from aqueous solution results in homogenous CuSCN layers with dominant thiocyanate ion bounded to copper through its S-end (Cu−SCN bonding), as in spin-coated CuSCN layers. Electrochemical impedance spectroscopy (EIS) confirms the p-type semiconductivity of layers with a flatband potential from 0.1 to 0.18 V vs. Ag/AgCl depending on the substrate type, and the acceptor concentration (NA) of 5 x 1020cm-3 in all cases. The flatband potentials determined from Mott-Schottky plots (EIS) are in good agreement with the Kelvin probe measurements. The blocking quality of CuSCN layers was tested using Ru(NH3)63+/2+ redox probe. CuSCN deposited on BDD substrate exhibits better blocking properties compared to CuSCN deposited on FTO.
Trvalý link: http://hdl.handle.net/11104/0319191