Low-priced plastic photovoltaics
Oct. 22, 2013 — Photovoltaic devices, which tap the power of the sun and convert it to electricity, offer a green -- and potentially unlimited -- alternative to fossil fuel use. So why haven't solar technologies been more widely adopted?
Share This:
Quite simply, "they're too expensive," says Ji-Seon Kim, a senior lecturer in experimental solid-state physics at Imperial College London, who, along with her colleagues, has come up with a technology that might help bring the prices down.
The scientists describe their new approach to making cheaper, more efficient solar panels in a paper in The Journal of Chemical Physics, produced by AIP Publishing.
"To collect a lot of sunlight you need to cover a large area in solar panels, which is very expensive for traditional inorganic -- usually silicon -- photovoltaics," explains Kim. The high costs arise because traditional panels must be made from high purity crystals that require high temperatures and vacuum conditions to manufacture.
A cheaper solution is to construct the photovoltaic devices out of organic compounds -- building what are essentially plastic solar cells. Organic semiconducting materials, and especially polymers, can be dissolved to make an ink and then simply "printed" in a very thin layer, some 100 billionths of a meter thick, over a large area. "Covering a large area in plastic is much cheaper than covering it in silicon, and as a result the cost per Watt of electricity-generating capacity has the potential to be much lower," she says.
One major difficulty with doing this, however, is controlling the arrangement of polymer molecules within the thin layer. In their paper, Kim and colleagues describe a new method for exerting such control. "We have developed an advanced structural probe technique to determine the molecular packing of two different polymers when they are mixed together," she says. By manipulating how the molecules of the two different polymers pack together, Kim and her colleagues created ordered pathways -- or "nanowires" -- along which electrical charges can more easily travel. This enables the solar cell to produce more electrical current, she said.
"Our work highlights the importance of the precise arrangement of polymer molecules in a polymer solar cell for it to work efficiently," says Kim, who expects polymer solar cells to reach the commercial market within 5 to 10 years.
Welcome to SUV System Ltd!
SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.
We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.
SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com
Electronic Components distributor:http://www.suvsystem.com
Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html
IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html
LED Distributor:http://www.suvsystem.com/l/LED-1.html
Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html
Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html
Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html
Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html
SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc
we are focus on the following fields,and hope we can help you.
Fairchild Semiconductor Transistors Texas Instruments(TI) IC Renesas parts IC Switches SANYO IC TDK IC chip Filter saws AD IC PANASONIC Resistors TOSHIBA Diodes TI IC Ligitek LED YAGEO Resistors NXP Transistors Bipolar Transistors Resistors NEC Transistors Civil IC Current Sensors Resistors Microchip IC About US Capacitor Chip Inductors Fast Recovery Diodes Kingbrigt LED NXP Diodes Voltage Regulators Transistors IC(Integrated Circuits) Rectifier Diodes Multi-units Transistors LED part Connectors Transistors Freescale FAIRCHILD diodes Dialight LED ON Diodes Infineon Technologies Transistors Freescale Semiconductor PANASONIC Schottky Diodes
http://www.suvsystem.com/a/6772.aspx
