Research on Graphene as Transparent Electrode of VCSEL Arrays

Author(s):  
HeQun Ding ◽  
Hao Li ◽  
Baolu Guan ◽  
LiChao Liu
2017 ◽  
Author(s):  
Lyudmyla Adamska ◽  
Sridhar Sadasivam ◽  
Jonathan J. Foley ◽  
Pierre Darancet ◽  
Sahar Sharifzadeh

Two-dimensional boron is promising as a tunable monolayer metal for nano-optoelectronics. We study the optoelectronic properties of two likely allotropes of two-dimensional boron using first-principles density functional theory and many-body perturbation theory. We find that both systems are anisotropic metals, with strong energy- and thickness-dependent optical transparency and a weak (<1%) absorbance in the visible range. Additionally, using state-of-the-art methods for the description of the electron-phonon and electron-electron interactions, we show that the electrical conductivity is limited by electron-phonon interactions. Our results indicate that both structures are suitable as a transparent electrode.


Author(s):  
F. Siegelin ◽  
C. Brillert

Abstract A failure analysis case study for oxide confined vertical cavity surface emitting laser (VCSEL) arrays will be presented. The focus of this work is on devices failing with a reduced optical output due to a rapid degradation of the laser diode. The complete analysis flow will be shown, including electrical and optical characterization as well as detailed investigations on a nanometer scale. It is known that these fails are caused by dislocations. An advanced FIB preparation method enabled cross-section and plan view TEM to successfully visualize the complete extent of a dislocation network.


Author(s):  
Naoki Takeda ◽  
Kazuki Yanagawa ◽  
Natsuki Hashimoto ◽  
Masato Ohsawa ◽  
Shota Tsuneyasu ◽  
...  

2009 ◽  
Author(s):  
Jean-Francois Seurin ◽  
Guoyang Xu ◽  
Viktor Khalfin ◽  
Alexander Miglo ◽  
James D. Wynn ◽  
...  

2021 ◽  
Vol 289 ◽  
pp. 129390
Author(s):  
Sangho Kim ◽  
Malkeshkumar Patel ◽  
Youngkuk Kim ◽  
Junsin Yi ◽  
Joondong Kim

2019 ◽  
Vol 28 (1) ◽  
pp. 66-73
Author(s):  
Ismail Borazan ◽  
Ayşe Celik Bedeloğlu ◽  
Ali Demir

In this article, the improvement in electrical performance of poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) as the transparent electrode doped with different additives (ethylene glycol (EG), isopropyl alcohol) or treatment of sulfuric acid was enhanced that organic solar cells (OSCs) were produced by using poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61 butyric acid methyl ester. OSCs were fabricated by the doped or treated PEDOT:PSS films as transparent electrodes. The photoelectrical measurements were carried out and the effects of doping or treatment were compared. As a result, EG-added PEDOT:PSS electrode showed the best power conversion efficiency value of 1.87% among the PEDOT:PSS anodes.


Small ◽  
2021 ◽  
pp. 2100487
Author(s):  
Dirk Döhler ◽  
Andrés Triana ◽  
Pascal Büttner ◽  
Florian Scheler ◽  
Eric S.A. Goerlitzer ◽  
...  

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