News Column

Findings from King Saud University Update Understanding of Optoelectronics

June 4, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- Researchers detail new data in Optoelectronics. According to news reporting originating from Riyadh, Saudi Arabia, by VerticalNews editors, the research stated, "The effect of CdS thickness and CdTe resistivity on short-circuit current, open-circuit voltage, fill factor and cell efficiency is studied in this work. The results have been carried out based on the optical losses (reflection and absorption) and recombination losses (front and back) under certain parameters of the absorber layer."

Our news editors obtained a quote from the research from King Saud University, "It has been found that the optical losses decrease with reducing the thickness of CdS layer. At CdS thickness of 100 nm, the contribution of optical and recombination losses is about 35% where the recorded current density is 20.1 mA/cm(-2). With further decrease in CdS thickness up to 70 nm, the short-circuit current density increases up to 21.1 mA/cm(-2) where the contribution of these losses is about 32%. The output power, open-circuit voltage and fill factor of CdS/CdTe solar cell are determined from the J-V characteristic. It has been found that these parameters increase with decreasing the resistivity of CdTe absorber layer and thinning the CdS window layer."

According to the news editors, the research concluded: "The maximum cell efficiency of 16.5 % is obtained at CdTe resistivity=0.1 Omega cm and CdS thickness=70 nm."

For more information on this research see: Study towards high efficiency CdS/CdTe solar cells. Journal of Optoelectronics and Advanced Materials, 2014;16(3-4):333-339. Journal of Optoelectronics and Advanced Materials can be contacted at: Natl Inst Optoelectronics, 1 Atomistilor St, PO Box Mg-5, Bucharest-Magurele 76900, Romania.

The news editors report that additional information may be obtained by contacting H.A. Mohamed, King Saud Univ, Dept. of Phys, Teachers College, Riyadh 11148, Saudi Arabia.

Keywords for this news article include: Asia, Riyadh, Saudi Arabia, Optoelectronics

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Source: Electronics Newsweekly