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Efficient Energy Transfer across Organic-2D Inorganic Heterointerfaces.

A new interesting article has been published in ACS Appl Mater Interfaces. 2018 Oct 19. doi: 10.1021/acsami.8b12291. [Epub ahead of print] and titled:

Efficient Energy Transfer across Organic-2D Inorganic Heterointerfaces.

Authors of this article are:

Cheng CH, Li Z, Hambarde A, Deotare PB.

A summary of the article is shown below:

Combining organic and inorganic semiconductors enable us to integrate complementary advantages of each material system into a single hybrid material platform. Here we report a study on the energy transport across a hybrid interface consisting of j-aggregates of organic dye and monolayer molybdenum disulphide (MoS2). The excellent overlap between the photoluminescence spectra of j-aggregates and the absorption of MoS2 B-exciton, enables the material system to be used to study Förster resonance energy transfer (FRET) across the hybrid interface. We report a short Förster radius of 1.88 nm for the hybrid system. We achieve this by fabricating photodetectors based on the hybrid organic-inorganic interface that combine the high absorption of organics with high charge mobility of inorganics. Concomitantly, the hybrid photodetectors show nearly 93 ± 5 % enhancement of photoresponsivity in the excitonic spectral overlap regime due to efficient energy transfer (ET) from j-aggregate to MoS2. This work not only provides valuable insight into the ET mechanism across such hybrid organic-inorganic interfaces but also demonstrates the feasibility of the platform for designing efficient energy conversion and optoelectronic devices.

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