Department of Physics
Indian Institute of Technology Delhi
Solid State Lighting
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Light Emitting Diode Based Solar Simulator with Broad Band Spectra
Puspita Chanda1, Vikas Kumar1, Dheeraj Kumar1, Kanchan Saxena2, and D.S Mehta1*
1.Bio-photonics and Green photonics laboratory, Department of Physics, Indian Institute of Technology Delhi,
2. Amity Institute of Renewable and Alternative Energy, Amity University, Sector 125, Noida, UP, India
Email-*mehtads@physics.iitd.ac.in
Xenon arc lamp-based solar simulators are generally used for characterizing solar cells in the laboratory environment. But they are costly, inefficient and short lifetime. White LED-based systems are becoming popular now because they are efficient, low cost and have long lifetimes, but their spectrum is narrow. We propose the development of an LED-based solar simulator with broadband spectra. Broadband illumination, CCT (4500 K - 5500 K), and CRI (90-100) were obtained by means of using multiple phosphors-based white LED systems. Experimental setups with three combinations were studied.
