Bibliographic Details
| Title: |
Generating Triplets in Organic Semiconductor Tetracene upon Photoexcitation of Transition Metal Dichalcogenide ReS$_2$ |
| Authors: |
Maiti, Sourav, Poonia, Deepika, Schiettecatte, Pieter, Hens, Zeger, Geiregat, Pieter, Kinge, Sachin, Siebbeles, Laurens D. A. |
| Publication Year: |
2021 |
| Collection: |
Physics (Other) |
| Subject Terms: |
Physics - Chemical Physics |
| More Details: |
We studied the dynamics of transfer of photoexcited electronic states in a bilayer of the two-dimensional transition metal dichalcogenide ReS$_2$ and tetracene, with the aim to produce triplets in the latter. This material combination was used as the band gap of ReS$_2$ (1.5 eV) is slightly larger than the triplet energy of tetracene (1.25 eV). Using time-resolved optical absorption spectroscopy, transfer of photoexcited states from ReS$_2$ to triplet states in tetracene was found to occur within 5 ps with an efficiency near 38%. This result opens up new possibilities for heterostructure design of two-dimensional materials with suitable organics to produce long-lived triplets. Triplets are of interest as sensitizers in a wide variety of applications including optoelectronics, photovoltaics, photocatalysis, and photon upconversion. |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2104.15095 |
| Accession Number: |
edsarx.2104.15095 |
| Database: |
arXiv |
