Tuesday, January 11, 2011

Lab 5 Cellular Respiration Full Lab

solar cells printed on paper (even toilet)


To demonstrate a new method of manufacturing solar cells, capable of printing on very thin and flexible, the researchers of the 'MIT solar cells coated with sheets of toilet paper . Of course, the substrate is not the best choice for creating high-performance solar cells, but shows the versatility of the new printing method that can reduce costs and expand the production range of applications for photovoltaics.

Karen Gleason, a professor of chemical engineering at 'MIT, explained how you can print solar cells on a variety of delicate materials and flexible as rice paper, plastic, or extremely thin sheets of traditional paper.

The new technique does not require the use of solvents, and leaves intact the substrate on which solar cells are applied. The method has been defined oCVD (oxidative chemical vapor deposition), and involves the vapor deposition of a monomer in addition to an oxidizing agent, which go together to create a conductive plastic, defined Pedota, whose ability to run is increased by about 1000 times with the addition of silver particles.

The solar cells thus produced can be folded and stretched without their properties being affected. In laboratory tests, researchers have bent a substrate molded plastic for more than 1000 times, showing how the efficiency has remained almost intact (99%) after the stress.

To further demonstrate the robustness of the new method, the researchers printed solar cells on a sheet of paper, which then folded to make an airplane. Despite the folds, the paper has continued to generate electricity.
To demonstrate a new method of manufacturing solar cells, capable of printing on very thin and flexible, the researchers of the 'MIT solar cells coated with sheets of toilet paper. Of course, the substrate is not the best choice for creating high-performance solar cells, but shows the versatility the new printing method that can reduce costs and expand the production range of applications for photovoltaics. Karen Gleason, a professor of chemical engineering at 'MIT, explained how you can print solar cells on a variety of soft, flexible materials such as rice paper, plastic, or extremely thin sheets of traditional paper.
The new technique does not require the use of solvents, and leaves intact the substrate on which solar cells are applied. The method has been defined oCVD (oxidative chemical vapor deposition), and involves the vapor deposition of a monomer in addition to an oxidizing agent, which go together to create a conductive plastic, defined Pedota, whose ability to run is increased by about 1000 times by the addition of silver particles.
The solar cells thus produced can be folded and stretched without their properties being affected. In laboratory tests, researchers have bent a printed plastic substrate for more than 1000 times, showing how the efficiency has remained almost intact (99%) after the stress. To further demonstrate the robustness of the new method, the researchers printed solar cells on a sheet of paper, which then folded to make an airplane. Despite the folds, the paper has continued to generate electricity.
To demonstrate a new method di fabbricazione di celle solari, in grado di stamparle su materiali estremamente sottili e flessibili, i ricercatori dell' MIT hanno ricoperto di celle fotovoltaiche dei fogli di carta igienica. Di certo, il substrato scelto non è il massimo per la creazione di celle solari performanti, ma mostra la versatilità del nuovo metodo di stampa, in grado di contenere i costi i produzione e di espandere la gamma di applicazioni per il fotovoltaico.
Karen Gleason, professoressa di ingegneria chimica all' MIT, ha mostrato come si possano stampare celle solari su una varietà di materiali delicati e flessibili, come carta di riso, plastica, o fogli estremamente sottili di carta tradizionale.
La nuova tecnica non richiede l'utilizzo solvent, and leaves intact the substrate on which solar cells are applied. The method has been defined oCVD (oxidative chemical vapor deposition), and involves the vapor deposition of a monomer in addition to an oxidizing agent, which go together to create a conductive plastic, defined Pedota, whose ability to run is increased by about 1000 times with the addition of silver particles. The solar cells thus produced can be folded and stretched without their properties being affected. In laboratory tests, researchers have bent a printed plastic substrate for more than 1000 times, showing how the efficiency has remained almost intact (99%) after the stress. Per dimostrare ulteriormente la robustezza del nuovo metodo, i ricercatori hanno stampato le celle solari su un foglio di carta, che hanno poi piegato per realizzare un aeroplanino. Nonostante le pieghe, il foglio ha continuato a generare corrente elettrica.









Questo nuovo metodo non è soltanto applicabile alla stampa di celle solari, ma si può sfruttare per la realizzazione di elettronica flessibile, come tessuti hi-tech e display flessibili












fonte:


http://www.ditadifulmine.com/

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