How does the energy transfer mechanism in TMD heterostructures work?
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Energy transfer in TMD heterostructures occurs through interlayer charge transfer (CT) and energy transfer (ET) processes . In TMDs, long-distance ET can occur over several tens of nm, while the CT process is limited in distance . The efficiency of ET depends on the resonant overlapping of excitonic states between the TMD layers . The ET process can enhance the photoluminescence (PL) emission of the higher optical bandgap material in the heterostructure . Increasing temperature weakens the ET process due to increased electron-phonon scattering, leading to a decrease in PL emission . In type-II TMD heterostructures, nonradiative ET dominates over CT, resulting in enhanced PL emission . The choice of materials in the heterostructure plays a crucial role in determining the nature and efficiency of the ET process .
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Open access•Posted Content | The energy transfer mechanism in TMD heterostructures can occur through either interlayer charge transfer (CT) or nonradiative energy transfer (ET) processes, depending on the specific combination of materials used in the heterostructure. |
04 May 2023 | The paper provides a fully microscopic theory describing the effect of the F\"{o}rster interaction on exciton dynamics and optics in a WSe$_2$/tetracene heterostack. It predicts a strongly unidirectional energy transfer from the organic to the TMD layer. |
| The paper explains that the energy transfer mechanism in TMD heterostructures is mediated by the F\"{o}rster interaction, which leads to a unidirectional transfer of energy from the organic layer to the TMD layer. | |
| The energy transfer mechanism in TMD heterostructures occurs through efficient interlayer energy transfer from lower-bandgap to higher-bandgap 2D materials, resulting in enhanced photoluminescence emission. | |
13 Jan 2023 | The paper explains that in TMD heterostructures, long-distance energy transfer (ET) occurs between the materials, allowing for efficient transfer of excitonic states and enhanced photoluminescence emission. |
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