Design and Realization of White Quantum Dot Light-Emitting Electrochemical Cell Hybrid Devices

被引：25

作者：

Frohleiks, Julia ^{[1
,2
,3
]}

Gellner, Sandra ^{[1
,2
,3
]}

Wepfer, Svenja ^{[1
,2
,3
]}

Bacher, Gerd ^{[2
,3
]}

Nannen, Ekaterina ^{[1
,2
,3
]}

机构：

[1] Univ Duisburg Essen, Res Grp Solid State Lighting, NanoEnergieTechnikZentrum, Carl Benz Str 199, D-47057 Duisburg, Germany

[2] Univ Duisburg Essen, Werkstoffe Elektrotech, Bismarckstr 81, D-47057 Duisburg, Germany

[3] Univ Duisburg Essen, CENIDE, Bismarckstr 81, D-47057 Duisburg, Germany

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 49期

关键词：

light-emitting hybrid devices; quantum dots; light-emitting electrochemical cells; white light emitters; iTMC; TRANSITION-METAL COMPLEX; CHARGE INJECTION; HIGHLY EFFICIENT; BLUE-GREEN; POLYMER; ELECTROLUMINESCENCE; TRANSPORT; EMISSION; BRIGHT;

D O I：

10.1021/acsami.8b15100

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The simple device architecture as well as the solution-based processing makes light-emitting electrochemical cells (LECs) a promising device concept for large-area flexible lighting solutions. The lack of deep-blue emitters, which are, at the same time, efficient, bright, and long-term stable, complementary to the wide variety of yellow-orange emitting LECs, hampers the creation of white LECs. We present a hybrid device concept for the realization of white light emission by combining blue colloidal quantum dots (QDs) and an Ir-based ionic transition-metal complex (iTMC) LEC in a new type of white QD-LEC hybrid device (QLEC). By careful arrangement of the active layers, we yield light emission from both the blue QDs and the yellow iTMC emitter already at voltages below 3 V. The QLEC devices show homogeneous white light emission with high color rendering index (up to 80), luminance levels above 850 cd m(-2), and a maximum external quantum efficiency greater than 0.2%.

引用

页码：42637 / 42646

页数：10

共 74 条

[1] Dynamically Doped White Light Emitting Tandem Devices [J].