Abstract
Researchers emonstrate that even a small modulation in molecular geometric structures greatly affects concentration quenching of thermally activated delayed fluorescence (TADF) and can enhance the quantum efficiencies of solid-state photoluminescence (PL) and electroluminescence (EL). The exciton-quenching rates of TADF emitters show an exponential dependence on their intermolecular distance in thin films, revealing that electron-exchange interactions of triplet excitons, as described by the Dexter energy-transfer model, dominate the concentration quenching of TADF. This mechanism stands in marked contrast to those of conventional fluorescent and phosphorescent emitters involving Förster energy transfer.
| Original language | English |
|---|---|
| Article number | 1604856 |
| Journal | Advanced Materials |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jan 1 2017 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence. / Lee, Jiyoung; Aizawa, Naoya; Numata, Masaki; Adachi, Chihaya; Yasuda, Takuma.
In: Advanced Materials, Vol. 29, No. 4, 1604856, 01.01.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence
AU - Lee, Jiyoung
AU - Aizawa, Naoya
AU - Numata, Masaki
AU - Adachi, Chihaya
AU - Yasuda, Takuma
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Researchers emonstrate that even a small modulation in molecular geometric structures greatly affects concentration quenching of thermally activated delayed fluorescence (TADF) and can enhance the quantum efficiencies of solid-state photoluminescence (PL) and electroluminescence (EL). The exciton-quenching rates of TADF emitters show an exponential dependence on their intermolecular distance in thin films, revealing that electron-exchange interactions of triplet excitons, as described by the Dexter energy-transfer model, dominate the concentration quenching of TADF. This mechanism stands in marked contrast to those of conventional fluorescent and phosphorescent emitters involving Förster energy transfer.
AB - Researchers emonstrate that even a small modulation in molecular geometric structures greatly affects concentration quenching of thermally activated delayed fluorescence (TADF) and can enhance the quantum efficiencies of solid-state photoluminescence (PL) and electroluminescence (EL). The exciton-quenching rates of TADF emitters show an exponential dependence on their intermolecular distance in thin films, revealing that electron-exchange interactions of triplet excitons, as described by the Dexter energy-transfer model, dominate the concentration quenching of TADF. This mechanism stands in marked contrast to those of conventional fluorescent and phosphorescent emitters involving Förster energy transfer.
UR - http://www.scopus.com/inward/record.url?scp=85006511579&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006511579&partnerID=8YFLogxK
U2 - 10.1002/adma.201604856
DO - 10.1002/adma.201604856
M3 - Article
C2 - 27859841
AN - SCOPUS:85006511579
VL - 29
JO - Advanced Materials
JF - Advanced Materials
SN - 0935-9648
IS - 4
M1 - 1604856
ER -