TY - JOUR
T1 - 2D layered perovskite containing functionalised benzothieno-benzothiophene molecules
T2 - Formation, degradation, optical properties and photoconductivity
AU - Van Gompel, Wouter T.M.
AU - Herckens, Roald
AU - Denis, Paul Henry
AU - Mertens, Martijn
AU - Gélvez-Rueda, María C.
AU - Van Hecke, Kristof
AU - Ruttens, Bart
AU - D’Haen, Jan
AU - Grozema, Ferdinand C.
AU - More Authors, null
PY - 2020
Y1 - 2020
N2 - 2D layered hybrid perovskites are currently in the spotlight for applications such as solar cells, light-emitting diodes, transistors and photodetectors. The structural freedom of 2D layered perovskites allows for the incorporation of organic cations that can potentially possess properties contributing to the performance of the hybrid as a whole. In this study, we incorporated a benzothieno[3,2-b]benzothiophene (BTBT) alkylammonium cation into the organic layer of a 2D layered lead iodide perovskite. The formation and degradation of this material are discussed in detail. It is shown that the use of a solvent vapour annealing method significantly enhances the absorption, emission and crystallinity of films of this 2D layered perovskite as compared to regular thermal annealing. The photoconductivity of the films was determined using time-resolved microwave conductivity (TRMC) as well as in a device. In both cases, the solvent vapour annealed films show markedly higher photoconductivity than the films obtained using the regular thermal annealing approach.
AB - 2D layered hybrid perovskites are currently in the spotlight for applications such as solar cells, light-emitting diodes, transistors and photodetectors. The structural freedom of 2D layered perovskites allows for the incorporation of organic cations that can potentially possess properties contributing to the performance of the hybrid as a whole. In this study, we incorporated a benzothieno[3,2-b]benzothiophene (BTBT) alkylammonium cation into the organic layer of a 2D layered lead iodide perovskite. The formation and degradation of this material are discussed in detail. It is shown that the use of a solvent vapour annealing method significantly enhances the absorption, emission and crystallinity of films of this 2D layered perovskite as compared to regular thermal annealing. The photoconductivity of the films was determined using time-resolved microwave conductivity (TRMC) as well as in a device. In both cases, the solvent vapour annealed films show markedly higher photoconductivity than the films obtained using the regular thermal annealing approach.
UR - http://www.scopus.com/inward/record.url?scp=85086005785&partnerID=8YFLogxK
U2 - 10.1039/d0tc01053g
DO - 10.1039/d0tc01053g
M3 - Article
AN - SCOPUS:85086005785
SN - 2050-7534
VL - 8
SP - 7181
EP - 7188
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 21
ER -