quantum dots – The InfoGreenGlobal https://infogreenglobal.com The InfoGreenGlobal Sun, 17 Mar 2024 21:20:58 +0000 en-US hourly 1 The quantum dots and the shape of a solar concentrator significantly increases its efficiency https://infogreenglobal.com/the-quantum-dots-and-the-shape-of-a-solar-concentrator-significantly-increases-its-efficiency/ https://infogreenglobal.com/the-quantum-dots-and-the-shape-of-a-solar-concentrator-significantly-increases-its-efficiency/#respond Mon, 23 Jan 2012 19:50:26 +0000 http://infogreenglobal.com/?p=4415 Luminiscent solar concentrators are designed to absorb solar radiation over a broad range of colors and re-emit it over a narrower range (for example, only red), a process known as down-converting. This light is transported to solar cells for photocurrent generation. The quantum dots embedded in the concentrator are the materials that carry out this […]

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]]> https://infogreenglobal.com/the-quantum-dots-and-the-shape-of-a-solar-concentrator-significantly-increases-its-efficiency/feed/ 0 Quantum dots to increase the efficiency of solar cells up to 45 percent https://infogreenglobal.com/quantum-dots-to-increase-the-efficiency-of-solar-cells-up-to-45-percent/ https://infogreenglobal.com/quantum-dots-to-increase-the-efficiency-of-solar-cells-up-to-45-percent/#respond Sat, 21 Jan 2012 16:38:40 +0000 http://infogreenglobal.com/?p=4395 By tweaking the smallest of parts, a trio of University at Buffalo engineers is hoping to dramatically increase the amount of sunlight that solar cells convert into electricity. With military colleagues, the UB researchers have shown that embedding charged quantum dots into photovoltaic cells can improve electrical output by enabling the cells to harvest infrared […]

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]]> https://infogreenglobal.com/quantum-dots-to-increase-the-efficiency-of-solar-cells-up-to-45-percent/feed/ 0 100-percent-plus in operating solar cells https://infogreenglobal.com/100-percent-plus-in-operating-solar-cells/ https://infogreenglobal.com/100-percent-plus-in-operating-solar-cells/#respond Mon, 19 Dec 2011 19:54:45 +0000 http://infogreenglobal.com/?p=4203 Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) have reported the first solar cell that produces a photocurrent that has an external quantum efficiency greater than 100 percent when photoexcited with photons from the high energy region of the solar spectrum. The external quantum efficiency for photocurrent, usually expressed as a […]

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]]> https://infogreenglobal.com/100-percent-plus-in-operating-solar-cells/feed/ 0 New quantum-dot LED design https://infogreenglobal.com/new-quantum-dot-led-design/ https://infogreenglobal.com/new-quantum-dot-led-design/#respond Thu, 17 Nov 2011 15:19:59 +0000 http://infogreenglobal.com/?p=4085 By nestling quantum dots in an insulating egg-crate structure, researchers at the Harvard School of Engineering and Applied Sciences (SEAS) have demonstrated a robust new architecture for quantum-dot light-emitting devices (QD-LEDs). Quantum dots are very tiny crystals that glow with bright, rich colors when stimulated by an electric current. QD-LEDs are expected to find applications […]

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]]> https://infogreenglobal.com/new-quantum-dot-led-design/feed/ 0 Quantum Dots – Key for the Efficient Future Solar Cells https://infogreenglobal.com/quantum-dots-%e2%80%93-key-for-the-efficient-future-solar-cells/ https://infogreenglobal.com/quantum-dots-%e2%80%93-key-for-the-efficient-future-solar-cells/#respond Mon, 23 May 2011 06:34:58 +0000 http://infogreenglobal.com/?p=3391 According to the theory of multiple exciton generation, when an electron absorbs light energy can transfer energy to more than another one electron resulting in more electricity from the same amount of absorbed light. The electron full of light energy is called exciton. The efficiency of solar cells could be improved due to studies done […]

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