Mode Dispersion in Photonic Crystal Organic Light-Emitting Diodes

被引：19

作者：

Fu, Xiangyu ^{[1
]}

Peng, Cheng ^{[1
]}

Samal, Monica ^{[1
]}

Barange, Nilesh ^{[1
]}

Chen, Yi-An ^{[2
]}

Shin, Dong-Hun ^{[3
]}

Mehta, Yash ^{[1
]}

Rozelle, Adam ^{[1
]}

Chang, Chih-Hao ^{[2
]}

So, Franky ^{[1
]}

机构：

[1] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[2] Univ Texas Austin, Walker Dept Mech Engn, Austin, TX 78712 USA

[3] North Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA

来源：

ACS APPLIED ELECTRONIC MATERIALS | 2020年 / 2卷 / 06期

关键词：

OLED; photonic crystal; optical modes; photonic band gap; light extraction; WAVE-GUIDE MODES; EXTRACTION; EMISSION; OLEDS; LAYER;

D O I：

10.1021/acsaelm.0c00326

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Similar to an electronic lattice determining the motion of electrons in solids, photonic crystals (PhCs) are periodic photonic nanostructures that determine the propagation of photons. By incorporating PhCs into organic light-emitting diodes (OLEDs), the device efficiency and emission spectra can be modified, which can be explained and predicted by the mode dispersion. In this work, we experimentally measure the mode dispersion of 1-D and 2-D PhC OLEDs at different azimuthal angles with angle-resolved electro-luminescence spectra. The results are explained using an intuitive geometry approach, which shifts and slices the cone-shaped optical modes to obtain the mode dispersion of PhC OLEDs. We note that the weak cavity mode and a narrow photonic band gap are visible only after eliminating the intrinsic emitter spectrum in the air mode dispersion. In the end, we discuss the implication of mode dispersion on the OLED light extraction.

引用

页码：1759 / 1767

页数：9

共 33 条

[1] Surface plasmon subwavelength optics [J].

Barnes, WL ;

Dereux, A ;

Ebbesen, TW .

NATURE, 2003, 424 (6950) :824-830

[2] 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

[3] Converting an Organic Light-Emitting Diode from Blue to White with Bragg Modes [J].

Daskalakis, Konstantinos S. ;

Freire-Fernandez, Francisco ;

Moilanen, Antti J. ;

van Dijken, Sebastiaan ;

Torma, Paivi .

ACS PHOTONICS, 2019, 6 (11) :2655-2662

[4] Photonic bands in two-dimensionally patterned multimode GaN waveguides for light extraction [J].

David, A ;

Meier, C ;

Sharma, R ;

Diana, FS ;

DenBaars, SP ;

Hu, E ;

Nakamura, S ;

Weisbuch, C ;

Benisty, H .

APPLIED PHYSICS LETTERS, 2005, 87 (10)

[5] Enhanced light extraction efficiency from organic light emitting diodes by insertion of a two-dimensional photonic crystal structure [J].

Do, YR ;

Kim, YC ;

Song, YW ;

Lee, YH .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (12) :7629-7636

[6] Highly directional emission via coupled surface-plasmon tunneling from electroluminescence in organic light-emitting devices [J].

Feng, J ;

Okamoto, T ;

Kawata, S .

APPLIED PHYSICS LETTERS, 2005, 87 (24) :1-3

[7]

Fluxim A. G., SETFOS SEMICONDUCTIN

[8] Light extraction from surface plasmons and waveguide modes in an organic light-emitting layer by nanoimprinted gratings [J].

Frischeisen, Joerg ;

Niu, Quan ;

Abdellah, Alaa ;

Kinzel, Joerg B. ;

Gehlhaar, Robert ;

Scarpa, Giuseppe ;

Adachi, Chihaya ;

Lugli, Paolo ;

Bruetting, Wolfgang .

OPTICS EXPRESS, 2011, 19 (01) :A7-A19

[9] Quantitative allocation of Bragg scattering effects in highly efficient OLEDs fabricated on periodically corrugated substrates [J].

Fuchs, C. ;

Schwab, T. ;

Roch, T. ;

Eckardt, S. ;

Lasagni, A. ;

Hofmann, S. ;

Luessem, B. ;

Mueller-Meskamp, L. ;

Leo, K. ;

Gather, M. C. ;

Scholz, R. .

OPTICS EXPRESS, 2013, 21 (14) :16319-16330

[10] Simultaneous inhibition and redistribution of spontaneous light emission in photonic crystals [J].

Fujita, M ;

Takahashi, S ;

Tanaka, Y ;

Asano, T ;

Noda, S .

SCIENCE, 2005, 308 (5726) :1296-1298

← 1 2 3 4 →