Evidence of hybridization states at the donor/acceptor interface: case of m-MTDATA/PPT

We performed a spectroscopic study on the m-MTDATA (donor) and PPT (acceptor) molecular vertical heterostructure. The electronic properties of the donor/acceptor interface have been comprehensively characterized by synchrotron radiation-based photoelectron spectroscopy (PES) and near-edge X-ray abso...

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Published in:Journal of physics. Condensed matter 2022-05, Vol.34 (21), p.214008
Main Authors: Zhang, Teng, Wang, Tingting, Grazioli, Cesare, Guarnaccio, Ambra, Brumboiu, Iulia Emilia, Johansson, Fredrik O L, Beranová, Klára, Coreno, Marcello, de Simone, Monica, Brena, Barbara, Liu, Liwei, Wang, Yeliang, Puglia, Carla
Format: Article
Language:English
Subjects:
D-A heterojunction
hybridized state
interface
m-MTDATA
MTDATA
NEXAFS
PES
Physics
PPT
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Summary:We performed a spectroscopic study on the m-MTDATA (donor) and PPT (acceptor) molecular vertical heterostructure. The electronic properties of the donor/acceptor interface have been comprehensively characterized by synchrotron radiation-based photoelectron spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS). The spectroscopic results reveal the existence of new hybridization states which fill in the energy gap, likely attributed to the interaction between the donor and the acceptor molecules. Such hybridized state can improve the hole transport property of the donor molecule, providing essential fundamental knowledge of the charge-transfer mechanism of the organic electronic devices based on donor-acceptor molecules and thus has a positive impact on the device efficiency.
ISSN:0953-8984
1361-648X
1361-648X
DOI:10.1088/1361-648X/ac5aff