Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO3/Au/MoO3 electrode with encapsulation

被引：69

作者：

Choi, Dae Keun ^{[1
,2
,3
]}

Kim, Dong Hyun ^{[1
,2
,3
]}

Lee, Chang Min ^{[1
,2
,3
]}

Hafeez, Hassan ^{[1
,2
]}

Sarker, Subrata ^{[1
,2
,3
]}

Yang, Jun Su ^{[1
]}

Chae, Hyung Ju ^{[1
,2
,3
]}

Jeong, Geon-Woo ^{[1
,2
,3
]}

Choi, Dong Hyun ^{[1
,2
,3
]}

Kim, Tae Wook ^{[1
,2
,3
]}

Yoo, Seunghyup ^{[4
]}

Song, Jinouk ^{[4
]}

Ma, Boo Soo ^{[5
]}

Kim, Taek-Soo ^{[5
]}

Kim, Chul Hoon ^{[6
]}

Lee, Hyun Jae ^{[6
]}

Lee, Jae Woo ^{[7
]}

Kim, Donghyun ^{[7
]}

Bae, Tae-Sung ^{[8
]}

Yu, Seung Min ^{[8
]}

Kang, Yong-Cheol ^{[9
]}

Park, Juyun ^{[9
]}

Kim, Kyoung-Ho ^{[10
]}

Sujak, Muhammad ^{[10
]}

Song, Myungkwan ^{[11
]}

Kim, Chang-Su ^{[11
]}

Ryu, Seung Yoon ^{[1
,2
,3
]}

机构：

[1] Korea Univ, Div Display & Semicond Phys, Display Convergence, Coll Sci & Technol, Sejong Campus, Sejong City, South Korea

[2] Korea Univ, Dept Appl Phys, Sejong Campus, Sejong City, South Korea

[3] Korea Univ, E ICT Culture Sports Convergence Track, Sejong Campus, Sejong City, South Korea

[4] Korea Adv Inst Sci & Technol KAIST, Sch Elect Engn, Daejeon, South Korea

[5] Korea Adv Inst Sci & Technol KAIST, Dept Mech Engn, Daejeon, South Korea

[6] Korea Univ, Dept Adv Mat Chem, Coll Sci & Technol, Sejong Campus, Sejong City, South Korea

[7] Korea Univ, Interdisciplinary Grad Program Artificial Intelli, Sejong City, South Korea

[8] Korea Basic Sci Inst KBSI, Jeonju Ctr, Anal & Researcher Div, Jeollabuk Do, South Korea

[9] Pukyong Natl Univ, Dept Chem, 45 Yongso Ro, Busan, South Korea

[10] Chungbuk Natl Univ, Dept Phys, Cheongju, South Korea

[11] Korea Inst Mat Sci KIMS, Surface Mat Div, Chang Won, South Korea

来源：

NATURE COMMUNICATIONS | 2021年 / 12卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

TRANSPARENT ELECTRODE; THIN-FILMS; GRAPHENE; ORIENTATION; NETWORKS; DEVICES; DESIGN;

D O I：

10.1038/s41467-021-23203-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Stretchable organic light-emitting diodes are ubiquitous in the rapidly developing wearable display technology. However, low efficiency and poor mechanical stability inhibit their commercial applications owing to the restrictions generated by strain. Here, we demonstrate the exceptional performance of a transparent (molybdenum-trioxide/gold/molybdenum-trioxide) electrode for buckled, twistable, and geometrically stretchable organic light-emitting diodes under 2-dimensional random area strain with invariant color coordinates. The devices are fabricated on a thin optical-adhesive/elastomer with a small mechanical bending strain and water-proofed by optical-adhesive encapsulation in a sandwiched structure. The heat dissipation mechanism of the thin optical-adhesive substrate, thin elastomer-based devices or silicon dioxide nanoparticles reduces triplet-triplet annihilation, providing consistent performance at high exciton density, compared with thick elastomer and a glass substrate. The performance is enhanced by the nanoparticles in the optical-adhesive for light out-coupling and improved heat dissipation. A high current efficiency of similar to 82.4cd/A and an external quantum efficiency of similar to 22.3% are achieved with minimum efficiency roll-off.

引用

页数：11

共 64 条

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