scholarly journals Drastic Effect of Sequential Deposition Resulting from Flux Directionality on the Luminescence Efficiency of Nanowire Shells

2021 ◽  
Author(s):  
Hanno Küpers ◽  
Ryan B. Lewis ◽  
Pierre Corfdir ◽  
Michael Niehle ◽  
Timur Flissikowski ◽  
...  
Keyword(s):  
Sequential Deposition ◽  
Luminescence Efficiency ◽  
Drastic Effect

Comparative Study Of Gan Movpe Growth Processes Using Two Different “Surface Preparation-Carrier Gas” Combinations

1998 ◽  
Vol 512 ◽  
Author(s):  
P. Vennegues ◽  
S. Haffouz ◽  
A. Bouille ◽  
M. Leroux ◽  
B. Beaumont
Keyword(s):  
Growth Process ◽  
Defect Density ◽  
Three Dimensional ◽  
Surface Preparation ◽  
Photoluminescence Properties ◽  
Carrier Gas ◽  
Luminescence Efficiency ◽  
Growth Modes ◽  
Movpe Growth ◽  
Drastic Effect

ABSTRACTThe growth modes and resulting microstructures of GaN films grown by Metalorganic Vapor Phase Epitaxy (MOVPE) on (0001) sapphire with either a simple nitridation of the surface and N2 as carrier gas or with a treatment of the nitridated surface under silane and ammonia with a mixture of H2 and N2 as carrier gas have been investigated. The second process results in a three dimensional first stage of the growth before a coalescence of the islands and the smoothing of the surface. Using this growth process, the defects density can be decreased down to 3.108 cm−2. This reduction in defect density has a drastic effect on photoluminescence properties of the material, and the luminescence efficiency can be increased by a factor of 20. It is also observed that the strain of this material is much higher as compared with material grown with the first process.

scholarly journals Strategies to Improve Luminescence Efficiency and Stability of Blue Perovskite Light‐Emitting Devices

Small Science ◽  
2021 ◽  
pp. 2000048
Author(s):  
Xiao-Yan Qian ◽  
Ying-Yi Tang ◽  
Wei Zhou ◽  
Yang Shen ◽  
Ming-Lei Guo ◽  
...  
Keyword(s):  
Light Emitting ◽  
Light Emitting Devices ◽  
Luminescence Efficiency

A facile approach to improve the performance and stability of perovskite solar cells via FA/MA precursor temperature controlling in sequential deposition fabrication

2021 ◽  
Vol 112 ◽  
pp. 110794
Author(s):  
Mohanad D. Humadi ◽  
Haitham T. Hussein ◽  
Mayada S. Mohamed ◽  
Mustafa K.A. Mohammed ◽  
Ersin Kayahan
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Sequential Deposition

Phosphindole fused pyrrolo[3,2-b]pyrroles: a new single-molecule junction for charge transport

2019 ◽  
Vol 48 (19) ◽  
pp. 6347-6352
Author(s):  
Di Wu ◽  
Jueting Zheng ◽  
Chenyong Xu ◽  
Dawei Kang ◽  
Wenjing Hong ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
High Thermostability ◽  
New Family ◽  
Luminescence Efficiency ◽  
Molecule Junction ◽  
Single Molecule Junction

A new family of phosphindole fused ladder-type heteroacenes with a pyrrolo[3,2-b]pyrrole core were synthesized and characterized, which show good luminescence efficiency, high thermostability and tunable conductance.

scholarly journals Photoluminescence Activity of Neodymium-Doped Gallium Oxide Thin Films

2008 ◽  
Vol 1111 ◽  
Author(s):  
Celine Lecerf ◽  
Philippe Marie ◽  
Cedric Frilay ◽  
Julien Cardin ◽  
Xavier Portier
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Substrate Temperature ◽  
Gallium Oxide ◽  
Electronic Transitions ◽  
Oxide Thin Films ◽  
Structural And Optical Properties ◽  
Luminescence Efficiency

AbstractPhotoluminescence activity was observed for neodymium-doped gallium oxide thin films prepared by radiofrequency magnetron co-sputtering. Structural and optical properties of as-grown and annealed films were studied and photoluminescence activity was especially investigated. The most intense lines were associated to the 4F3/2  4I9/2 and 4F3/2  4I11/2 electronic transitions of Nd3+. The effects of deposition and treatment parameters such as the substrate temperature, the post anneal treatment or the neodymium content in the films were particularly examined with the aim to reach the best luminescence efficiency.

scholarly journals Sequential deposition of copper/alumina composites

2005 ◽  
Vol 40 (12) ◽  
pp. 3293-3295 ◽  
Author(s):  
X. Wang ◽  
J. Ma ◽  
A. Maximenko ◽  
E. A. Olevsky ◽  
M. B. Stern ◽  
...  
Keyword(s):  
Sequential Deposition ◽  
Alumina Composites
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