Zno Thin films And Light Emitting Diodes

... p-type ZnO Table Various homojunction ZnO LEDs Structure Method Dopant Emission (nm) References p -ZnO/ n -ZnO sub p -ZnO/ n -ZnO N2 O implanted ZnO/ n -ZnO/ Al2 O3 n -ZnO/ u -ZnO/ p -ZnO p -ZnO/ n -ZnO/ ZnO sub p -ZnO/ n -ZnO/ a-Al2 ... ZnO/ n -ZnO/ Al2 O3 n -ZnO/ u -ZnO/ p -ZnO p -ZnO/ n -ZnO/ ZnO sub p -ZnO/ n -ZnO/ a-Al2 O3 p -ZnO/ p-BeZnO/MQW/n-BeZnO/n -ZnO p -ZnO/ n -ZnO, p -...

Ngày tải lên: 21/12/2016, 10:56

... applications The 2-MeV ions only have a minor effect on optical properties of the LED devise after irradiation with moderate fluences Conclusion In summary, the influence of He+ ion irradiation on the ... eV) The observation of the band-edge emissions at 380 nm (3.26 eV) are attributed to the first and second longitudinal optical (LO) phonon replica This is con...

Ngày tải lên: 18/06/2014, 22:20

... applications The 2-MeV ions only have a minor effect on optical properties of the LED devise after irradiation with moderate fluences Conclusion In summary, the influence of He+ ion irradiation on the ... eV) The observation of the band-edge emissions at 380 nm (3.26 eV) are attributed to the first and second longitudinal optical (LO) phonon replica This is con...

Ngày tải lên: 20/06/2014, 04:20

... Electrospray deposition of polymer thin films for organic light-emitting diodes Wontae Hwang1, Guoqing Xin1, Minjun Cho1, Sung Min Cho1, and Heeyeop Chae*2 School of Chemical Engineering, ... Abstract Electrospray process was developed for organic layer deposition onto polymer organic light-emitting diode [PLED] devices in this work An electrospray can be u...

Ngày tải lên: 20/06/2014, 23:20

... below the conduction band are denoted to be contributing to the red emission In summary, the origin of red emission in chemically obtained ZnO nanotubes has been investigated by EL spectra The ... (1.65 eV) The EL intensities of the green, yellow, orange, and the red emission (from 620 to 690 nm) are decreased, but the EL intensity of the red emiss...

Ngày tải lên: 21/06/2014, 05:20

... and fabrication of polarized InGaN light- emitting diodes and THz polarizer based on subwavelength metallic nanogratings InGaN light emitting diodes are poised to replace conventional light sources ... directions More recently, the viability of the polarized light source concept based on conventional c-plane GaN -based LEDs has been proven f...

Ngày tải lên: 10/09/2015, 15:53

... Phosphorescent materials for OLEDs Chapter 1.1 Introduction Mechanism and structures of organic light- emitting diodes (OLEDs) Light- emitting materials for OLEDs 1.2.1 Fluorescent materials 1.2.2 ... Alq3, TPD and PPV 1.1 Mechanism and structure of organic light- emitting diodes (OLEDs) Electroluminescence is obtained from light- emitting diodes...

Ngày tải lên: 10/09/2015, 15:54

... LPE GROWTH AND FABRICATION OF GAP GREEN LEDS ABSTRACT Nitrogen-doped gallium phosphide is a material that has been well established for use in the fabrication of yellow -green light emitting diodes ... LIQUID PHASE EPITAXIAL GROWTH AND FABRICATION OF GALLIUM PHOSPHIDE GREEN LIGHT EMITTING DIODES CONTENTS ABSTRACT……………………………………………………………………… …...

Ngày tải lên: 10/11/2015, 11:00

Ngày tải lên: 14/03/2014, 13:20

... Highly efficient blue organic light- emitting diodes using quantum well- like multiple emissive layer structure Ju-An Yoon1 Email: jjuan25@naver.com ... Abstract In this study, the properties of blue organic light- emitting diodes (OLEDs), employing quantum well- like structure (QWS) that includes four different blue emissive materials of 4,4′-bis(2,2′-diph...

Ngày tải lên: 06/05/2014, 08:55

... Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light- emitting diodes Seokjae Lee†1, Jaryong Koo†1, Gunwoo Hyung†1, Donghwan Lim1, Donghyung ... the other devices due to a relatively narrow emissive region Conclusions In conclusion, the present study reports on the high efficiency blue PHOLEDs based...

Ngày tải lên: 20/06/2014, 23:20

... probed by time-resolved photoluminescence spectroscopy Appl Phys Lett 2005, 87:071102 33 Kwon MK, Kim JY, Kim BH, Park IK, Cho CY, Byeon CC, Park SJ: Surfaceplasmon -enhanced light-emitting diodes ... 12 of 12 doi:10.1186/1556-276X-6-199 Cite this article as: Gu et al.: Light-emitting diodes enhanced by localized surface plasmon resonance Nanoscale Research Letters 2011 6...

Ngày tải lên: 21/06/2014, 05:20

... a C(1s), O(1s) spectra at normal take-off angle of 458, b S(2p) spectra at normal take-off angle of 458, and c S(2p) spectra at a smaller take-off angle of 25° 123 400 Luminous intensity (µW/cm2) ... in conductivity was achieved with the modification process Based on the modified polymeric anodes, FOLEDs were fabricated and compared with the FOLEDs of ITO anodes A lower turn volt...

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 21/07/2014, 16:21