Measurement of Colour Temperature of Incandescent Light Sources Using a Silicon Solar Cell

1988 ◽  
Vol 17 (3) ◽  
pp. 71-75
Author(s):  
V. N. Sankaranarayan ◽  
P. Sridaran
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Light Sources ◽  
Colour Temperature ◽  
Incandescent Light

The efficiency of a silicon solar cell for different light sources

1991 ◽  
Vol 1 (2) ◽  
pp. 207-210
Author(s):  
M.A. Jamal ◽  
J.A. Muaddi
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Light Sources

The Influence Of The Led Luminaires Electrical Parameters On Their Correlated Colour Temperature During Operation Mode

2020 ◽  
pp. 89-96
Author(s):  
Sergei S. Kapitonov ◽  
Alexei S. Vinokurov ◽  
Sergei V. Prytkov ◽  
Sergei Yu. Grigorovich ◽  
Anastasia V. Kapitonova ◽  
...  
Keyword(s):  
Operation Mode ◽  
Light Sources ◽  
Electrical Parameters ◽  
Colour Temperature ◽  
Radiation Spectra ◽  
Service Period ◽  
Close Proximity ◽  
Definition Of ◽  
Comprehensive Study

The article describes the results of comprehensive study aiming at increase of quality of LED luminaires and definition of the nature of changes in their correlated colour temperature (CCT) in the course of operation. Dependences of CCT of LED luminaires with remote and close location of phosphor for 10 thousand hours of operation in different electric modes were obtained; the results of comparison between the initial and final radiation spectra of the luminaires are presented; using mathematical statistics methods, variation of luminaire CCT over the service period claimed by the manufacturer is forecast; the least favourable electric operation modes with the highest CCT variation observed are defined. The obtained results have confirmed availability of the problem of variation of CCT of LED luminaires during their operation. Possible way of its resolution is application of more qualitative and therefore expensive LEDs with close proximity of phosphor or LEDs with remote phosphor. The article may be interesting both for manufacturers and consumers of LED light sources and lighting devices using them.

CdSe/CdS Quantum Dot Core-Shell for Silicon Solar Cell Efficiency Enhancement

2020 ◽  
Vol 29 ◽  
pp. 8-14
Author(s):  
Manal Midhat Abdullah ◽  
Omar Adnan Ibrahim
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Energy Gap ◽  
Spectral Response ◽  
Solar Spectrum ◽  
Core Shell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Electron Hole Pair ◽  
Pair Generation

Core-shell nanocrystals are utilized to improve vitality conversion efficiency of Si based solar cells. In the present work, a study of synthesis and characterization of photo luminescent, down-shifting, core-shell CdSe/CdS quantum dots is introduced. The QD,s absorb in the UV range (350nm) of the solar spectrum and emit photons with wavelengths centered at (574 nm). Calculated energy gap is (2.16 eV), which is well suited for Silicon absorption and electron-hole pair generation. The grain size is ranged between (1.814 and 3.456 nm). Results show that the cell efficiency is improved from (8.81%) (For a reference silicon solar cell) to (10.07%) (For a CdSe/CdS QD deposited directly on the surface of the solar cell). This improvement is referred to the spreading of the absorbed solar radiation over the spectral response of the Si solar cell.

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