Study on the Fabrication of White Organic Light-Emitting Devices Using the Doping Characteristics of Rubrene and Programmed Test Circuit

2018 ◽  
Vol 18 (12) ◽  
pp. 8409-8413
Author(s):  
Shumei Li ◽  
Xu Li ◽  
Lizhong Wang ◽  
Hongbo Liu
Keyword(s):  
High Efficiency ◽  
Test System ◽  
Experimental Comparison ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Test Circuit ◽  
The Matrix ◽  
20 Nm ◽  
Display Control

A white organic light emitting device with structure of ITO/2T-NATA(20)/NPBX(15)/DPVBi(15)/ Alq:Rub(10, x)/Alq3(40)/LiF/Al was fabricated using doping rubrene. When the concentration of rubrene is 3 wt.%, the chromaticity is the best (0.319, 0.317), and the color coordinates are stable. When the thickness of the doping layer is 20 nm, the efficiency and luminance of the devices are the highest, which are 5.1022 cd/A and 17130 cd/m2, respectively. On the basis, a test system is consisted of Solomon’s OLED display control driver chip SSD1306 and microcontroller AT89C52, which tests the OLED dot matrix through the program to determine whether the matrix has dead point. Through experimental comparison, the test results are consistent with the external power supply test. The system has the characteristics of high efficiency and display characters of dynamic and static pictures, which provides a feasible driving method for the practical application of OLED.

High efficiency fluorescent white OLEDs based on DOPPP

2017 ◽  
Vol 31 (23) ◽  
pp. 1750220 ◽  
Author(s):  
Gang Zhang ◽  
Chen Chen ◽  
Jihui Lang ◽  
Lina Zhao ◽  
Wenlong Jiang
Keyword(s):  
High Efficiency ◽  
Thermal Evaporation ◽  
Maximum Luminance ◽  
Thermal Evaporation Method ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Maximum Current ◽  
20 Nm ◽  
Better Than

The white organic light-emitting devices (WOLED) with the structures of ITO/m-MTDATA (10 nm)/NPB (30 nm)/Rubrene (0.2 nm)/DOPPP (x nm)/TAz (10 nm)/Alq3 (30 nm)/LiF (0.5 nm)/Al and ITO/NPB (30 nm)/DPAVBi:Rubrene (2 wt.%, 20 nm)/ DOPPP (x nm)/TAZ (10 nm)/Alq3 (30 nm)/LiF (0.5 nm)/Al (100 nm) have been fabricated by the vacuum thermal evaporation method. The results show that the chroma of the non-doped device is the best and the color coordinates are in the range of white light. The maximum luminance is 12,750 cd/m2 and the maximum current efficiency is 8.55 cd/A. The doped device A has the maximum luminance (16,570 cd/m2), when the thickness of blue layer DOPPP is 25 nm, and the doped device B achieves the highest efficiency (10.47 cd/A), when the thickness of DOPPP is 15 nm. All the performances of the doped devices are better than the non-doped one. The results demonstrate that the doped structures can realize the energy transfer and then improve the performance of the device effectively.

High-efficiency blue and white organic light-emitting devices by combining fluorescent and phosphorescent blue emitters

2012 ◽  
Vol 13 (11) ◽  
pp. 2412-2416 ◽  
Author(s):  
Xuecheng Piao ◽  
Yongming Yin ◽  
Jian Liu ◽  
Yang Li ◽  
Kai Xu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Blue Emitters ◽  
Organic Light Emitting Devices

Ultra High Efficiency Green Organic Light-Emitting Devices

2006 ◽  
Vol 46 (1) ◽  
pp. L10-L12 ◽  
Author(s):  
Daisaku Tanaka ◽  
Hisahiro Sasabe ◽  
Yan-Jun Li ◽  
Shi-Jian Su ◽  
Takashi Takeda ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Improve the Efficiency of White Organic Light-Emitting Devices Using Double-Doped System

2010 ◽  
Vol 152-153 ◽  
pp. 687-690
Author(s):  
Gui Ying Ding ◽  
Wen Long Jiang ◽  
Guang De Wang ◽  
Qiang Han ◽  
Xi Chang
Keyword(s):  
Current Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Maximum Current ◽  
Hole Transporting ◽  
White Oleds ◽  
Organic Light Emitting Devices ◽  
20 Nm ◽  
White Oled

The doped and non-doped white Organic light-emitting devices (OLEDs) were fabricated, using strong yellow emitting and hole-transporting ability of TPAHQZn. When the white OLED is a double-doped structure, greatly enhanced the efficiency of the device. The double-doped white device were fabricated as follows: ITO/2T-NATA (17 nm)/ CBP: 30% TPAHQZn: 8% Ir(ppy)3 (25 nm)/ NPBX (15 nm)/BCP(8nm)/TPBi: 10% Ir(ppy)3 (15nm)/Alq3 (20 nm)/LiF (1.3 nm)/Al. The double-doped white OLEDs were obtained with Commission International de L’Eclairage coordinates of (0.29,0.28) at 17 V, the maximum current efficiency increaed four times that double-doped white device of 4.12cd/A(8V) than non-doped of 1.03 cd/A (10V) .

Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters

2020 ◽  
Vol 8 (21) ◽  
pp. 7200-7210 ◽  
Author(s):  
Takahiro Kamata ◽  
Hisahiro Sasabe ◽  
Nozomi Ito ◽  
Yoshihito Sukegawa ◽  
Ayato Arai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Triplet Energy ◽  
Energy Hole ◽  
Light Emitting ◽  
Drive Voltage ◽  
Light Emitting Devices ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Long Lifetime

A smart high-triplet energy hole-transporter exhibits significant stability in the anion state realizing record-breaking highly efficient and long-living thermally activated delayed fluorescent (TADF) organic light-emitting devices (OLEDs).

A Donor–Acceptor-type Host Material for Solution-processed Phosphorescent Organic Light-emitting Devices Showing High Efficiency

2014 ◽  
Vol 43 (12) ◽  
pp. 1935-1936 ◽  
Author(s):  
Chang-Hwa Jun ◽  
Yong-Jin Pu ◽  
Masahiro Igarashi ◽  
Takayuki Chiba ◽  
Hisahiro Sasabe ◽  
...  
Keyword(s):  
High Efficiency ◽  
Host Material ◽  
Solution Processed ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Type Host ◽  
Organic Light ◽  
Donor Acceptor ◽  
Organic Light Emitting Devices

High-Efficiency White Organic Light-Emitting Devices Based on a Highly Amorphous Iridium(III) Orange Phosphor

2006 ◽  
Vol 18 (21) ◽  
pp. 5097-5103 ◽  
Author(s):  
Xiao-Ming Yu ◽  
Hoi-Sing Kwok ◽  
Wai-Yeung Wong ◽  
Gui-Jiang Zhou
Keyword(s):  
High Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices
Sign in / Sign up

Export Citation Format

Share Document