Intrinsic Defect‐Assisted UV–Visible Energy Conversion in Gd 2 O 3 :Er Nanoparticles

2019 ◽  
Vol 256 (5) ◽  
pp. 1800356 ◽  
Author(s):  
Yulia Kuznetsova ◽  
Anatoly Zatsepin ◽  
Dmitry Zatsepin ◽  
Luisa Spallino ◽  
Vladimir Rychkov ◽  
...  
2021 ◽  
Vol 926 (1) ◽  
pp. 012091
Author(s):  
W Rahmalia ◽  
E Crespo ◽  
T Usman

Abstract Dye-sensitized solar cell (DSSC) is a third-generation solar cell that has been developed as one of the clean and renewable alternative energies. This study aims to fabricate norbixin-sensitized solar cell (NSSC). Norbixin was obtained from the saponification followed by acidification of bixin and characterized using UV-Visible and FTIR spectroscopy. The solar cell was assembled using anatase-TiO2 semiconductor, KI/I2/MPII in acetonitrile as the electrolyte, and a platinum paste-based cathode. The UV-Visible spectrophotometry analysis results showed three peaks of carotenoid characteristics at 434, 457, and 486 nm. The formation of norbixin was proved by the absence of a spectral peak for the C-O-C ester group of bixin at 1254 dan 1159 cm-1” The cells performance test showed that the maximum energy conversion efficiency of NSSC increased with increasing light intensity up to 0.08 W/cm2. Exposure to the light above this intensity causes a decrease in the maximum energy conversion efficiency due to the temperature factor. The data also showed that the cell assembled was reusable. It still showed relatively good performance until the third day of analysis.


2016 ◽  
Vol 62 ◽  
pp. 717-722 ◽  
Author(s):  
M.S. Pathak ◽  
M. Seshadri ◽  
N. Singh ◽  
Vijay Singh ◽  
Jung-Kul Lee

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78669-78677 ◽  
Author(s):  
Mamilla Rathaiah ◽  
Antonio Diego Lozano-Gorrín ◽  
Palamandala Babu ◽  
Chalicheemalapalli Kulala Jayasankar ◽  
Víctor Lavín ◽  
...  

We studied the structural and luminescence properties of nanocrystalline RE3Ga5O12 (RE = Gd, Y and Lu) garnets co-doped with 1 mol% of Nd3+ and 10 mol% of Yb3+ ions. The Nd3+ sensitized Yb3+ emission at 1025 nm is observed due to efficient Nd3+ to Yb3+ energy transfer.


2019 ◽  
Vol 3 (5) ◽  
pp. 573-578 ◽  
Author(s):  
Kwanwoo Shin

Living cells naturally maintain a variety of metabolic reactions via energy conversion mechanisms that are coupled to proton transfer across cell membranes, thereby producing energy-rich compounds. Until now, researchers have been unable to maintain continuous biochemical reactions in artificially engineered cells, mainly due to the lack of mechanisms that generate energy-rich resources, such as adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide (NADH). If these metabolic activities in artificial cells are to be sustained, reliable energy transduction strategies must be realized. In this perspective, this article discusses the development of an artificially engineered cell containing a sustainable energy conversion process.


1979 ◽  
Vol 76 ◽  
pp. 273-276 ◽  
Author(s):  
R. Brouillard ◽  
B. Delaporte ◽  
J. M. EL Hage Chahine ◽  
J. E. Dubois
Keyword(s):  

1977 ◽  
Vol 38 (10) ◽  
pp. 1293-1299 ◽  
Author(s):  
U. Giorgianni ◽  
G. Mondio ◽  
P. Perillo ◽  
G. Saitta ◽  
G. Vermiglio
Keyword(s):  

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