In situ fabrication of porous MoS2 thin-films as high-performance catalysts for electrochemical hydrogen evolution

2013 ◽  
Vol 49 (68) ◽  
pp. 7516 ◽  
Author(s):  
Zhiyi Lu ◽  
Haichuan Zhang ◽  
Wei Zhu ◽  
Xiaoyou Yu ◽  
Yun Kuang ◽  
...  
Author(s):  
Zhuang-Hao Zheng ◽  
Jun-Yun Niu ◽  
Dong-Wei Ao ◽  
Bushra Jabar ◽  
Xiao-Lei Shi ◽  
...  

2017 ◽  
Vol 4 (3) ◽  
pp. 594-600 ◽  
Author(s):  
Jing Yu ◽  
Fei-Xiang Ma ◽  
Yue Du ◽  
Pan-Pan Wang ◽  
Cheng-Yan Xu ◽  
...  

1989 ◽  
Vol 169 ◽  
Author(s):  
C. B. Lee ◽  
R. K. Singh ◽  
S. Sharan ◽  
A. K. Singh ◽  
P. Tiwari ◽  
...  

AbstractWe report in‐situ fabrication of c‐axis textured YBa2Cu3O7‐x superconducting thin films with Tco > 77K on unbuffered silicon substrates by the biased pulsed laser evaporation (PLE) technique in the temperature range of 550‐650°C. At substrate temperatures below 550°C, no c‐axis texturing of the superconducting film was observed. The YBa2Cu3O7‐x superconducting films were fabricated by ablating a bulk YBa2Cu3O7 target by a XeCl excimer laser (λ = 308 nm, τ = 45 × 10‐9 sec) in a chamber maintained at an oxygen pressure of 0.2 torr . The thickness of the films was varied from 0.3 to 0.5 nm depending on the number of laser pulses. Extensive diffusion was observed in thin films deposited at substrate temperatures above 550°C. However, microstructurally, with increase in the substrate temperature the films exhibited larger grain size and greater degree of c‐axis texturing (measured by the ratio of the (005) and (110) X‐ray diffraction peaks). This was found to give rise to better superconducting properties with Tco exceeding 77 K for YBa2Cu3O7‐x films deposited on Si substrates at 650°C.


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