IMEC to develop full-printed solar cells for photovoltaic conversion efficiency of 3%

IMEC is an independent research institution located in Belgium (Belgium) of Leuven (Leuven), in the nano-electronics and nano-technology leadership position in the world, and also the Netherlands, the United States, China and Japan to set up an office, with more than 1,600 employees, including the Mill and Visiting Fellow, in 2007 brought revenue for the country about 2.4 billion euros. They are mainly resolved on the basis of academic science and industrial manufacturing process differences between the unique processes, systems technology, the patent group and the most advanced equipment. Today, they verify that the entire solution process of the organic solar cells.
“We are developing a way for the whole solution process of the organic solar cell can be high-quality electric sexual contact, so this battery has a 3% of the electricity conversion efficiency.” IMEC said so. Research laboratories in Belgium and the use of previously developed the initiative for organic solar cells sprayed layer coating technology, “This method is suitable for mass production of volume after volume (roll-to-roll) manufacturing process, so whether it is or can be hard Flexible substrates can be, fast and cheap manufacturing large-area organic solar cells. ”
Metal electrodes formed in the organic layer on top of semi-review body, electric contact must be allowed between conductivity between 104 and 106S/cm, and has high stability, has been through the commercialization of nano-particles of silver ink, under nitrogen at the use of spray gun spray painted, and then by 100 ~ 180 ℃ sintering, so that molten particles to form a continuous film. IMEC refers to “advanced technology throughout the ink-jet printing can be printed or manner of the realization of large area, and with volume on the volume of equipment to complete production.” Solution in order to complete the whole process of organic solar cells, IMEC put forward a reverse structure, that is, before the formation of electron collection layer (cathode), then is the semiconductor layer, and then coated with the anode. “If the cathode in the semiconductor layer after the formation of the electron layer resistance files must be in active layer above can avoid the type of metal electrode into the process of damage caused.”
The whole solution process, the barrier layer (usually the use of zinc oxide, ZnO, or titanium dioxide, TiO) formation, brought about by surface morphology, resulting in subsequent phases of silver nanoparticles to penetrate, resulting in cell conversion efficiency decreased. The anode in this area, due to electric-hole barrier layer (commonly used poly -3,4 – dioxo-thiophene ethylene [poly (3,4-ethylenedioxy-thiophene)], poly styrene sulfonic acid [poly (styrenesulfonate)] or both mixed-doped [PEDOT: PSS]) have adequate thickness, formed in the organic layer can protect the damage that may occur. Anode and then sprayed on the silver particles on, can be the whole solution process of the organic solar cells. All the organic materials such as poly (3 – f alkyl thiophene [poly (3-hexyl thiophene), referred to as P3HT] and 6,6 – phenyl-methyl-C61 D [(6,6)-phenyl C61-butyric acid methyl ester, referred to as PCBM) can be dissolved in solution and deposited on indium-tin oxide glass substrate.
Components of the photoelectric conversion efficiency is about 3%, equivalent to the general use of components made of evaporation, but the short-circuit current is higher than 10mA/cm2, when the nano-particle sintering temperature dropped to below 150 ℃, then can use flexible substrates, including polyethylene naphthalate [polyethylene naphthalate, referred to as PEN

      The article come from http://www.batteryoffice.com .