کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1263750 972076 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement in light extraction efficiency of organic light emitting diodes using double-layered transparent conducting oxide structure
ترجمه فارسی عنوان
افزایش کارآیی استخراج نور دیودهای آلی با استفاده از ساختار اکسید ورق شفاف دو لایه
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی


• Double-layered transparent conducting oxide (TCO) structure was used in bottom type OLEDs.
• The TCO structure was consisted of the IZO over the GZO.
• The surface of the GZO was electrochemically treated in NH4F solution.
• Double-layered TCO structure with electrochemical treatment on GZO surface shows light extraction improvement.
• Double-layered TCO structure with electrochemical treatment is a new technology for light extraction improvement.

We examined double-layered transparent conducting oxide (TCO) anode structures consisted of zinc-doped indium oxide (IZO) over the gallium-doped zinc oxide (GZO), and IZO over the GZO with electrochemical treatment. In bottom type OLEDs, power efficiency and current efficiency were enhanced by a factor of 1.50 and 1.14 at a current density of 10 mA/cm2 in IZO/GZO anode structure, compared to the only IZO anode structure. Due to the reduced sheet resistance of the IZO/GZO TCO surface, the operating voltage of the OLED with IZO/GZO anode structure was lowered, leading to mostly enhance power efficiency. More enhanced in power efficiency and current efficiency by a factor of 1.21 and 1.25 at a current density of 10 mA/cm2 were achieved in IZO/GZO anode structure with electrochemical treatment, compared to the IZO/GZO anode structure due to the change of the surface morphology of the GZO and the existence of the nanoporous layer beneath the GZO surface by an electrochemical treatment. In total, double-layered IZO/GZO anode structure with electrochemical treatment was revealed at an enhancement factor of 1.80 in power efficiency and 1.42 in current efficiency, compared to the only IZO anode structure.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 15, Issue 10, October 2014, Pages 2178–2183
نویسندگان
, , , , , , , ,