graetzel solar cell Archives – The Green Optimistic green tech news, since 2008 Fri, 01 Feb 2013 21:13:45 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 New Dye for Organic Solar Cell Hits Record 11.9% Efficiency https://www.greenoptimistic.com/organic-solar-cells-dye-efficiency-11-9-20130201/ https://www.greenoptimistic.com/organic-solar-cells-dye-efficiency-11-9-20130201/#respond Fri, 01 Feb 2013 21:13:44 +0000 https://www.greenoptimistic.com/?p=32536 Solar cells may be the cleanest energy source available, but they have one thing working against them, which is efficiency. Sure, there are some who have expanses of horizontal and vertical real-estate on which to put hundreds of square feet of solar cells, but they could be better. If a 10%-efficiency solar array on the […]

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]]> https://www.greenoptimistic.com/organic-solar-cells-dye-efficiency-11-9-20130201/feed/ 0 32536 New Quantum Dot-Enabled Solar Cells Doubling Output Current With Same Lighting Conditions https://www.greenoptimistic.com/quantum-dot-solar-cell-two-electrons-20101018/ https://www.greenoptimistic.com/quantum-dot-solar-cell-two-electrons-20101018/#respond Mon, 18 Oct 2010 14:05:28 +0000 https://www.greenoptimistic.com/?p=11271 Cost-efficient and energy-efficient solar cells could be right around the corner. These so-called "third-generation" photovoltaics begin to emerge nowadays and dismiss a theory stated in 1961 by William Shockley and Hans Queisser, who showed that there is a theoretical 31 percent limitation in what regards the maximum efficiency for a single solar cell.

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]]> https://www.greenoptimistic.com/quantum-dot-solar-cell-two-electrons-20101018/feed/ 0 11271 Zinc Oxide Solar Cells Receiving 8 Percent Boost With Food Dyes https://www.greenoptimistic.com/zinc-oxide-solar-cell-food-dyes-20100904/ https://www.greenoptimistic.com/zinc-oxide-solar-cell-food-dyes-20100904/#respond Sat, 04 Sep 2010 16:53:57 +0000 https://www.greenoptimistic.com/?p=9960 Zinc oxide-based solar cells have just received an innovation from an Indian scientist, Ram Mehra of Sharda University in Greater Noida, India. He claims boosting the capacity of zinc oxide fuel cells and making them capture more of the incident light by using a blended mixture of common dyes, regularly used in food and medical industries.

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