Light out-coupling efficiencies of organic light-emitting diode structures and the effect of photoluminescence quantum yield

被引:120
作者
Smith, LH [1 ]
Wasey, JAE
Samuel, IDW
Barnes, WL
机构
[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England
[2] Univ St Andrews, Sch Phys & Astron, Organ Semicond Ctr, St Andrews KY16 9SS, Fife, Scotland
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1002/adfm.200500283
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Results obtained from modeling the light out-coupling efficiency of an organic light-emitting diode (OLED) structure containing the recently developed first-generation fac-tris(2-phenylpyridine) iridium-cored dendrimer (Ir-G1) as the emissive organic layer are reported. Comparison of the results obtained for this material with those of corresponding structures based upon small-molecule and polymer emissive materials is made. The calculations of out-coupling efficiency performed here take account of many factors, including the photoluminescence quantum yield (PLQY) of the emissive materials. Further, how each material system might perform with regard to out-coupling efficiency when a range of possible PLQYs are considered is shown. The calculations show that the very high efficiency of dendrimer-based OLEDs can be attributed primarily to their high PLQY.
引用
收藏
页码:1839 / 1844
页数:6
相关论文
共 34 条
[1]   Influence of molecular structure on the properties of dendrimer light-emitting diodes [J].
Anthopoulos, TD ;
Markham, JPJ ;
Namdas, EB ;
Lawrence, JR ;
Samuel, IDW ;
Lo, SC ;
Burn, PL .
ORGANIC ELECTRONICS, 2003, 4 (2-3) :71-76
[2]   Highly efficient single-layer dendrimer light-emitting diodes with balanced charge transport [J].
Anthopoulos, TD ;
Markham, JPJ ;
Namdas, EB ;
Samuel, IDW ;
Lo, SC ;
Burn, PL .
APPLIED PHYSICS LETTERS, 2003, 82 (26) :4824-4826
[3]   Phosphorescent materials for application to organic light emitting devices [J].
Baldo, MA ;
Thompson, ME ;
Forrest, SR .
PURE AND APPLIED CHEMISTRY, 1999, 71 (11) :2095-2106
[4]  
Barnes WL, 1998, J MOD OPTIC, V45, P661, DOI 10.1080/09500349808230614
[5]   Effect of metal films on the photoluminescence and electroluminescence of conjugated polymers [J].
Becker, H ;
Burns, SE ;
Friend, RH .
PHYSICAL REVIEW B, 1997, 56 (04) :1893-1905
[6]  
BULEIER E, 1978, SYNTHESIS-STUTTGART, P155
[7]   Weak microcavity effects in organic light-emitting devices [J].
Bulovic, V ;
Khalfin, VB ;
Gu, G ;
Burrows, PE ;
Garbuzov, DZ ;
Forrest, SR .
PHYSICAL REVIEW B, 1998, 58 (07) :3730-3740
[8]   LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].
BURROUGHES, JH ;
BRADLEY, DDC ;
BROWN, AR ;
MARKS, RN ;
MACKAY, K ;
FRIEND, RH ;
BURN, PL ;
HOLMES, AB .
NATURE, 1990, 347 (6293) :539-541
[9]   ELECTROMAGNETIC-INTERACTIONS OF MOLECULES WITH METAL-SURFACES [J].
FORD, GW ;
WEBER, WH .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 113 (04) :195-287
[10]   Photoluminescence efficiency and absorption of aluminum-tris-quinolate (Alq(3)) thin films [J].
Garbuzov, DZ ;
Bulovic, V ;
Burrows, PE ;
Forrest, SR .
CHEMICAL PHYSICS LETTERS, 1996, 249 (5-6) :433-437