Abstract
Light emission from organic light-emitting diodes that make use of fluorescent materials have an internal quantum efficiency that is typically limited to no more than 25% due to the creation of non-radiative triplet excited states. Here, we report the use of electron-donating and electron-accepting molecules that allow a very high reverse intersystem crossing of 86.5% between non-radiative triplet and radiative singlet excited states and thus a means of achieving enhanced electroluminescence. Organic light-emitting diodes made using m-MTDATA as the donor material and 3TPYMB as the acceptor material demonstrate that external quantum efficiencies as high as 5.4% can be achieved, and we believe that the approach will offer even higher values in the future as a result of careful material selection.
| Original language | English |
|---|---|
| Pages (from-to) | 253-258 |
| Number of pages | 6 |
| Journal | Nature Photonics |
| Volume | 6 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2012 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
Cite this
Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion. / Goshi, Kenichi; Yoshida, Kou; Sato, Keigo; Adachi, Chihaya.
In: Nature Photonics, Vol. 6, No. 4, 01.04.2012, p. 253-258.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion
AU - Goshi, Kenichi
AU - Yoshida, Kou
AU - Sato, Keigo
AU - Adachi, Chihaya
PY - 2012/4/1
Y1 - 2012/4/1
N2 - Light emission from organic light-emitting diodes that make use of fluorescent materials have an internal quantum efficiency that is typically limited to no more than 25% due to the creation of non-radiative triplet excited states. Here, we report the use of electron-donating and electron-accepting molecules that allow a very high reverse intersystem crossing of 86.5% between non-radiative triplet and radiative singlet excited states and thus a means of achieving enhanced electroluminescence. Organic light-emitting diodes made using m-MTDATA as the donor material and 3TPYMB as the acceptor material demonstrate that external quantum efficiencies as high as 5.4% can be achieved, and we believe that the approach will offer even higher values in the future as a result of careful material selection.
AB - Light emission from organic light-emitting diodes that make use of fluorescent materials have an internal quantum efficiency that is typically limited to no more than 25% due to the creation of non-radiative triplet excited states. Here, we report the use of electron-donating and electron-accepting molecules that allow a very high reverse intersystem crossing of 86.5% between non-radiative triplet and radiative singlet excited states and thus a means of achieving enhanced electroluminescence. Organic light-emitting diodes made using m-MTDATA as the donor material and 3TPYMB as the acceptor material demonstrate that external quantum efficiencies as high as 5.4% can be achieved, and we believe that the approach will offer even higher values in the future as a result of careful material selection.
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UR - http://www.scopus.com/inward/citedby.url?scp=84862790099&partnerID=8YFLogxK
U2 - 10.1038/nphoton.2012.31
DO - 10.1038/nphoton.2012.31
M3 - Article
AN - SCOPUS:84862790099
VL - 6
SP - 253
EP - 258
JO - Nature Photonics
JF - Nature Photonics
SN - 1749-4885
IS - 4
ER -