scholarly journals Fabrication of large-area patterned porous silicon distributed Bragg reflectors

2008 ◽  
Vol 16 (17) ◽  
pp. 12757 ◽  
Author(s):  
D. Mangaiyarkarasi ◽  
Ow Y. Sheng ◽  
Mark B. Breese ◽  
Vincent L. Fuh ◽  
Eric T. Xioasong
Keyword(s):  
Porous Silicon ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors ◽  
Large Area

Fabrication of three dimensional porous silicon distributed Bragg reflectors

2008 ◽  
Vol 93 (22) ◽  
pp. 221905 ◽  
Author(s):  
D. Mangaiyarkarasi ◽  
M. B. H. Breese ◽  
Y. S. Ow
Keyword(s):  
Porous Silicon ◽  
Three Dimensional ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors

scholarly journals UV distributed Bragg reflectors build from porous silicon multilayers

2015 ◽  
Vol 10 ◽  
Author(s):  
F. Morales ◽  
G. Garcia ◽  
A. Luna ◽  
R. Lopez ◽  
E. Rosendo ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors

Large-area, liftoff nanoporous GaN distributed Bragg reflectors: Fabrication and application

2019 ◽  
Vol 489 ◽  
pp. 849-855 ◽  
Author(s):  
Xiaokun Yang ◽  
Zhen Chen ◽  
Dezhong Cao ◽  
Chongchong Zhao ◽  
Lvyang Shen ◽  
...  
Keyword(s):  
Bragg Reflectors ◽  
Distributed Bragg Reflectors ◽  
Large Area

scholarly journals Planar narrowband Tamm plasmon-based hot-electron photodetectors with double distributed Bragg reflectors

Nano Express ◽  
2021 ◽  
Author(s):  
Weijia Shao ◽  
Tingting Liu
Keyword(s):  
Optical Absorption ◽  
Gold Film ◽  
Cost Effective ◽  
Plasmonic Nanostructures ◽  
Bragg Reflectors ◽  
Hot Electron ◽  
Distributed Bragg Reflectors ◽  
Large Area ◽  
Electron Collection ◽  
Sustained Performance

Abstract Hot-electron photodetectors (HE PDs) are attracting a great deal of attention from plasmonic community. Many efficient HE PDs with various plasmonic nanostructures have been demonstrated, but their preparations usually rely on complicated and costly fabrication techniques. Planar HE PDs are viewed as potential candidates of cost-effective and large-area applications, but they likely fail in the simultaneous achievement of outstanding optical absorption and hot-electron collection. To reconcile the contradiction between optical and electrical requirements, herein, we propose a planar HE PD based on optical Tamm plasmons (TPs) consisted of an ultrathin gold film (10 nm) sandwiched between two distributed Bragg reflectors (DBRs). Simulated results show that strong optical absorption (>0.95) in the ultrathin Au film is realized. Electrical calculations show that the predicted peak photo-responsivity of proposed HE PD with double DBRs is over two times larger than that of conventional single-DBR HE PD. Moreover, the planar dual-DBR HE PDs exhibit a narrowband photodetection functionality and sustained performance under oblique incidences. The optical nature associated with TP resonance is elaborated.

Reflectivity Modelling of All-Porous-Silicon Distributed Bragg Reflectors and Fabry-Perot Microcavities

2005 ◽  
Vol 10 (1) ◽  
pp. 83-91 ◽  
Author(s):  
N. Samuolienė ◽  
E. Šatkovskis
Keyword(s):  
Porous Silicon ◽  
Wavelength Range ◽  
Active Layer ◽  
Optical Parameters ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors ◽  
Bragg Mirror ◽  
Number Of Layers ◽  
Fabry Perot ◽  
The Impact

Herein, the problem of nanocrystaline silicon laser and its importance in microelectronics are discussed upon. The features of vertical Fabry-Perot microcavities made on the base of porous silicon are described. The responses of the reflectivity of the distributed reflection Bragg mirrors and Fabry-Perot microcavities were found using transfer matrixes method for this purpose. Inherent optical parameters of porous silicon, deposited by electrochemical etch, were used in the calculations. The calculation of the reflectivity of the distributed reflection Bragg mirrors with front active layer of nanostructural porous silicon had been examined. In the second part, the features of Fabry-Perot microcavities on variation of the number of layers of the front or rear mirrors are described. The impact of the thickness of the active nanocrystaline silicon spacer between two distributed reflection Bragg mirrors upon the spectra of optical reflectivity of Fabry-Perot microcavities in the wavelength range of 0.4–0.9 µm had been examined as well. The made conclusions are important for improvement of the thickness of the active porous silicon spacer in front of Bragg mirror and the features of Fabry-Perot microcavities.

Photonic Polymer Replicas from Distributed Bragg Reflectors Structured Porous Silicon

2007 ◽  
Vol 7 (11) ◽  
pp. 4165-4168
Author(s):  
Jihoon Kim ◽  
Youngdae Koh ◽  
Seunghyun Jang ◽  
Young Chun Ko ◽  
Hee-Gweon Woo ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Silicon Film ◽  
Composite Films ◽  
Nanometer Scale ◽  
Crystal Layer ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors ◽  
Free Standing ◽  
Reflectivity Spectrum ◽  
Silicon Photonic

Well defined 1-dimentional (1-D) photonic crystals of polymer replicas have been successfully obtained. DBR porous silicon containing nanometer-scale pores are prepared by an anodic electrochemical etch of p++-type silicon wafer. The resulting DBR porous silicon film removed from the substrate by applying an electropolishing current has been thermally oxidized in the furnace at 400 °C for 3 h. Oxidized DBR PSi/polystyrene composite films are prepared by casting of polymer solution onto a free-standing porous silicon photonic crystal layer. Flexible photonic polymer replicas have been prepared after the removal of oxidized DBR PSi matrix in HF/H2O mixture solution. Polymer replicas exhibit a sharp resonance in the reflectivity spectrum. Optical characteristics of photonic polymer replica indicate that the surface of polymer film has a negative structure of DBR PSi. This replica is stable in aqueous solutions for several days without any degradation.

Porous silicon omnidirectional mirrors and distributed Bragg reflectors for planar waveguide applications

2007 ◽  
Vol 102 (6) ◽  
pp. 063111 ◽  
Author(s):  
E. Xifré-Pérez ◽  
L. F. Marsal ◽  
J. Ferré-Borrull ◽  
J. Pallarès
Keyword(s):  
Porous Silicon ◽  
Planar Waveguide ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors

Photonic Polymer Replicas from Distributed Bragg Reflectors Structured Porous Silicon

2007 ◽  
Vol 7 (11) ◽  
pp. 4165-4168 ◽  
Author(s):  
Jihoon Kim ◽  
Youngdae Koh ◽  
Seunghyun Jang ◽  
Young Chun Ko ◽  
Hee-Gweon Woo ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Silicon Film ◽  
Composite Films ◽  
Nanometer Scale ◽  
Crystal Layer ◽  
Bragg Reflectors ◽  
Distributed Bragg Reflectors ◽  
Free Standing ◽  
Reflectivity Spectrum ◽  
Silicon Photonic

Well defined 1-dimentional (1-D) photonic crystals of polymer replicas have been successfully obtained. DBR porous silicon containing nanometer-scale pores are prepared by an anodic electrochemical etch of p++-type silicon wafer. The resulting DBR porous silicon film removed from the substrate by applying an electropolishing current has been thermally oxidized in the furnace at 400 °C for 3 h. Oxidized DBR PSi/polystyrene composite films are prepared by casting of polymer solution onto a free-standing porous silicon photonic crystal layer. Flexible photonic polymer replicas have been prepared after the removal of oxidized DBR PSi matrix in HF/H2O mixture solution. Polymer replicas exhibit a sharp resonance in the reflectivity spectrum. Optical characteristics of photonic polymer replica indicate that the surface of polymer film has a negative structure of DBR PSi. This replica is stable in aqueous solutions for several days without any degradation.

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