Abstract
It is generally accepted that hole transport layers (HTLs) with thicknesses on the order of tens of nm are indispensable to the function of small molecule organic light-emitting diodes (OLEDs) if high electroluminescence and quantum efficiencies are to be achieved. In the present letter, small molecule OLEDs with high luminance and external quantum efficiencies are fabricated in which the HTL is replaced solely by an ultrathin (1-2 nm) self-assembled, saturated hydrocarbon organosiloxane monolayer. These results require some reconsideration of conventional design criteria regarding the necessity of HTLs and argue that the role of the self-assembled monolayer here is to enhance hole injection and charge recombination efficiency, while blocking electron transport to the anode. These results therefore offer significantly simplified device fabrication.
| Original language | English |
|---|---|
| Pages (from-to) | 3528-3530 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 81 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - Nov 4 2002 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Small molecule organic light-emitting diodes can exhibit high performance without conventional hole transport layers. / Huang, Qinglan; Cui, Ji; Yan, He; Veinot, Jonathan G C; Marks, Tobin J.
In: Applied Physics Letters, Vol. 81, No. 19, 04.11.2002, p. 3528-3530.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Small molecule organic light-emitting diodes can exhibit high performance without conventional hole transport layers
AU - Huang, Qinglan
AU - Cui, Ji
AU - Yan, He
AU - Veinot, Jonathan G C
AU - Marks, Tobin J
PY - 2002/11/4
Y1 - 2002/11/4
N2 - It is generally accepted that hole transport layers (HTLs) with thicknesses on the order of tens of nm are indispensable to the function of small molecule organic light-emitting diodes (OLEDs) if high electroluminescence and quantum efficiencies are to be achieved. In the present letter, small molecule OLEDs with high luminance and external quantum efficiencies are fabricated in which the HTL is replaced solely by an ultrathin (1-2 nm) self-assembled, saturated hydrocarbon organosiloxane monolayer. These results require some reconsideration of conventional design criteria regarding the necessity of HTLs and argue that the role of the self-assembled monolayer here is to enhance hole injection and charge recombination efficiency, while blocking electron transport to the anode. These results therefore offer significantly simplified device fabrication.
AB - It is generally accepted that hole transport layers (HTLs) with thicknesses on the order of tens of nm are indispensable to the function of small molecule organic light-emitting diodes (OLEDs) if high electroluminescence and quantum efficiencies are to be achieved. In the present letter, small molecule OLEDs with high luminance and external quantum efficiencies are fabricated in which the HTL is replaced solely by an ultrathin (1-2 nm) self-assembled, saturated hydrocarbon organosiloxane monolayer. These results require some reconsideration of conventional design criteria regarding the necessity of HTLs and argue that the role of the self-assembled monolayer here is to enhance hole injection and charge recombination efficiency, while blocking electron transport to the anode. These results therefore offer significantly simplified device fabrication.
UR - http://www.scopus.com/inward/record.url?scp=79956003576&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79956003576&partnerID=8YFLogxK
U2 - 10.1063/1.1517397
DO - 10.1063/1.1517397
M3 - Article
AN - SCOPUS:79956003576
VL - 81
SP - 3528
EP - 3530
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 19
ER -