Work

Defect healing and Förster resonant energy transfer in H2Pc-TMD organic-inorganic heterostructures

Year: 2026

Type: article

Abstract: ABSTRACT Organic - inorganic heterostructures (HS) combine the strong light absorption and exciton generation capabilities of organic molecules with the unique excitonic properties of layered transition metal dichalcogenides (TMDs), where the interfacial band alignment dictates the optical response. In this work, we investigate the influence of H 2 Pc molecules on CVD-grown MoS 2 and WS 2 monolayers using correlative microscopy techniques - Kelvin probe force microscopy (KPFM), photoluminescence (PL), and Raman spectroscopy. Comprehensive analysis of both electronic and optical properties provides detailed insights into the energy band alignment in these two HS. Despite their similar band alignments, the heterostructures exhibit strikingly different optical signatures. In the case of H 2 Pc/MoS 2 HS, the effect of defect healing is more pronounced, while for the H 2 Pc/WS 2 HS, strong indications of Förster energy transfer are observed. These findings highlight the critical role of transition dipole moment in addition to spectral overlap between donor emission and acceptor absorption in the design of optoelectronic devices.

Source: Surfaces and Interfaces

DOI: 10.1016/j.surfin.2026.108444

Authors: Šimun Mandić, Ana Senkić, Nataša Vujičić

Institutions: University of Rijeka, Institute of Physics, University of Münster

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,670

Funders: Sveučilište u Zagrebu, European Commission, Hrvatska Zaklada za Znanost, European Regional Development Fund