Abstract
The electron injection process, which limits the electroluminescent performance of organic devices, has been enhanced tremendously by inserting a layer of LiF with appropriate thickness between the cathode and a quinacridone doped organic layer. Devices with an Al/LiF cathode demonstrated a luminance in excess of 20 000 cd/m2 and an external quantum efficiency of 3%, which is comparable to devices with a Mg/LiF cathode. These devices show maximum luminance of 45 000 cd/m2 prior to failure in continuous bias operation. For the same LiF thickness, the operating voltage for devices with Al/LiF was lower than the corresponding operating voltage for devices with Mg/LiF or Mg alone. Tunneling theory is used to explain this enhancement.
Original language | English (US) |
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Pages (from-to) | 1762-1764 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 71 |
Issue number | 13 |
State | Published - Sep 29 1997 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Highly efficient and bright organic electroluminescent devices with an aluminum cathode. / Jabbour, G. E.; Kawabe, Y.; Shaheen, S. E.; Wang, J. F.; Morrell, M. M.; Kippelen, B.; Peyghambarian, Nasser N.
In: Applied Physics Letters, Vol. 71, No. 13, 29.09.1997, p. 1762-1764.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Highly efficient and bright organic electroluminescent devices with an aluminum cathode
AU - Jabbour, G. E.
AU - Kawabe, Y.
AU - Shaheen, S. E.
AU - Wang, J. F.
AU - Morrell, M. M.
AU - Kippelen, B.
AU - Peyghambarian, Nasser N
PY - 1997/9/29
Y1 - 1997/9/29
N2 - The electron injection process, which limits the electroluminescent performance of organic devices, has been enhanced tremendously by inserting a layer of LiF with appropriate thickness between the cathode and a quinacridone doped organic layer. Devices with an Al/LiF cathode demonstrated a luminance in excess of 20 000 cd/m2 and an external quantum efficiency of 3%, which is comparable to devices with a Mg/LiF cathode. These devices show maximum luminance of 45 000 cd/m2 prior to failure in continuous bias operation. For the same LiF thickness, the operating voltage for devices with Al/LiF was lower than the corresponding operating voltage for devices with Mg/LiF or Mg alone. Tunneling theory is used to explain this enhancement.
AB - The electron injection process, which limits the electroluminescent performance of organic devices, has been enhanced tremendously by inserting a layer of LiF with appropriate thickness between the cathode and a quinacridone doped organic layer. Devices with an Al/LiF cathode demonstrated a luminance in excess of 20 000 cd/m2 and an external quantum efficiency of 3%, which is comparable to devices with a Mg/LiF cathode. These devices show maximum luminance of 45 000 cd/m2 prior to failure in continuous bias operation. For the same LiF thickness, the operating voltage for devices with Al/LiF was lower than the corresponding operating voltage for devices with Mg/LiF or Mg alone. Tunneling theory is used to explain this enhancement.
UR - http://www.scopus.com/inward/record.url?scp=0031223888&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031223888&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031223888
VL - 71
SP - 1762
EP - 1764
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 13
ER -