Idea  Articles

The key attributes for achieving high-efficiency crystalline silicon solar cells are found and historical developments resulting in their realization discussed. Despite the success of laboratory cells with performance approaching the theoretical limit, commercial cell designs have to develop significantly to realize their potency.

In particular, the development of silicon solar cells structures as well as processes that facilitate entirely activated device volumes together with well-passive metal contacts and front and rear surfaces is essential (and yet not extremely challenging) to achieve commercial devices of 20% efficiency from solar-grade substrates. The inescapable trend towards thinner substrates will push manufacturers to evolve their models in this direction or else suffer from substantial performance loss.

At some point, a thin-film technology will likely reign over soon, with thin-film crystalline silicon solar cells being a serious candidate. Present commercial tactics and processes are in general inappropriate for thin-film fabrication, with even greater value placed on the achievement of devices with entirely activated volumes (diffusion lengths a lot greater than device thicknesses), well-passive metal contacts and surfaces and the important inclusion of light trapping.

The recent victory of 21.5% efficiency on a thin crystalline silicon solar cell technology (much less than 50 μ;m thick) adds credibility to the pursuit of crystalline silicon in thin films, with an important attribute of this laboratory cell being its tremendous light trapping which nullifies the long-term criticism of crystalline silicon solar cells regarding its poor absorption properties and correspondingly perceive inability to get high-performance thin-film devices. For low-priced, low-quality polycrystalline silicon solar cells material, the parallel-multi junction cell structure may provide a mechanism for realizing entirely activated cell volumes with the potential to achieve reasonable efficiencies at low cost over the subsequent decade.

Conventional solar cell technology are bulky and rigid, but building lightweight, flexible cells has come with trade-offs in efficiency and robustness. A new way for making flexible arrays of tiny silicon solar cells could make devices that don't suffer this trade-off. Arrays of these microcells are as efficient as conventional solar panels and may be more affordable to manufacture because they use significantly less silicon than others. The tiny silicon solar cells may very well be incorporated into, among other applications, window tinting, and they might be used to power a car's air conditioner and GPS.

Scientists led by John Rogers, a professor of materials science and engineering at the University of Illinois in Urbana-Champaign, utilized a combination of etching and transfer printing to create arrays of silicon solar cells that are one-tenth the thickness of conventional solar cells. They exhibited multiple possible designs for solar panels incorporating the microcells, which includes dense arrays flexible enough to bend around a pencil. "You could roll them up like a carpet, transport them easily in a van, and unfurl them onto a rooftop," Rogers claims.

The process builds on techniques for making flexible electronics silicon solar cell technology which Rogers has been developing over the past few years. First, the Illinois researchers etch bars about 1.5 millimeters long, 50 micrometers wide as well as 15 micrometers thick from a wafer of mono crystalline silicon.

Photovoltaic Modules: How It Functions
This article discuss about how photovoltaic modules work. Nowadays, electricity bills are rocketing skyward and most people dread about receiving their electric bills on their mails. An average of around 200 usd per month is the usual electric bill people consume.

How Solar Power For Homes Lowers Your Electricity Bills
Solar power is a great source of alternative energy and can be the answer to the major energy crisis we are likely to face in the years to come. You can easily reduce your electricity bills by using solar power for homes and even possibly completely eliminate it.

Precisely How Solar Power Could Lower Your Carbon Footprint And Help To Save Money As Well!
If you are interested in making your home greener, you may have been doing some research into alternative forms of energy. This area has exploded recently, and you now have more options than ever before. Why not turn to a time tested source of green energy - the sun?

The Preferred Way To Go Environment Friendly Is Using Private Photo Voltaic Energy
Going green is one of the hottest trends that are going on this generation because global warming is on the rise.Going green is the best things to do...

Information About Different Types Of Solar Chargers
Read this article to learn about the benefits of the different types of solar chargers and solar power in general.

An Instant Introduction Of Sunlight Lights And How They Work
Your solar garden lights will help to enhance and improve the appearance of any part of your yard or garden, including pathways and driveways. These days all solar lights are extremely popular because installation is just so easy.

Help The Environment With Solar Panel Systems
Solar panel systems are a vitally important means of obtaining energy in an environmentally friendly way. The evidence in support of the view that human beings are the major reason for global warming is now compelling.