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Micromorph
The portmanteau micromorph is a combination of the words microcrystalline and amorphous. It is used for a type of silicon based multijunction thin-film solar cell. The micromorph cell Micromorph cells are thin film solar cells based on a multijunction–architecture consisting of two solar cells that are stacked on top of each other. While the thin amorphous silicon top cell absorbs the blue light, the thicker microcrystalline silicon bottom cell absorbs the red and near-infrared light, allowing this so-called tandem cell to cover a wider range of the solar spectrum. Since the bandgaps of amorphous silicon (1.7eV) and microcrystalline Silicon (1.1eV) are well suited for tandem solar cells, the Shockley-Queisser limit of this cell allows conversion efficiencies of over 30%. In reality this limit can not be reached and typical stable efficiencies are about 9% (world record 11.7%). That is well over the stable efficiencies of single junction thin film silicon solar cells which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thin-film Solar Cell
A thin-film solar cell is a second generation solar cell that is made by depositing one or more thin layers, or thin film (TF) of photovoltaic material on a substrate, such as glass, plastic or metal. Thin-film solar cells are commercially used in several technologies, including cadmium telluride (CdTe), copper indium gallium diselenide (CIGS), and amorphous thin-film silicon (a-Si, TF-Si). Film thickness varies from a few nanometers ( nm) to tens of micrometers ( µm), much thinner than thin-film's rival technology, the conventional, first-generation crystalline silicon solar cell (c-Si), that uses wafers of up to 200 µm thick. This allows thin film cells to be flexible, and lower in weight. It is used in building-integrated photovoltaics and as semi-transparent, photovoltaic glazing material that can be laminated onto windows. Other commercial applications use rigid thin film solar panels (interleaved between two panes of glass) in some of the world's largest photovol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thin Film Solar Cell
A thin-film solar cell is a second generation solar cell that is made by depositing one or more thin layers, or thin film (TF) of photovoltaic material on a substrate, such as glass, plastic or metal. Thin-film solar cells are commercially used in several technologies, including cadmium telluride (CdTe), copper indium gallium diselenide (CIGS), and amorphous thin-film silicon (a-Si, TF-Si). Film thickness varies from a few nanometers ( nm) to tens of micrometers ( µm), much thinner than thin-film's rival technology, the conventional, first-generation crystalline silicon solar cell (c-Si), that uses wafers of up to 200 µm thick. This allows thin film cells to be flexible, and lower in weight. It is used in building-integrated photovoltaics and as semi-transparent, photovoltaic glazing material that can be laminated onto windows. Other commercial applications use rigid thin film solar panels (interleaved between two panes of glass) in some of the world's largest photovol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TEL Solar
TEL Solar, formerly Oerlikon Solar, is a manufacturer of production equipment for the manufacturing of thin-film silicon cells, headquartered in Trübbach, Switzerland, near the border to Liechtenstein. The Japanese electronics and semiconductor company Tokyo Electron acquired the company of about 650 employees from OC Oerlikon in November 2012. TEL Solar owns the patent for the double junction thin film silicon technology from 1993. Micromorph is the brand name describing the amorphous/microcrystalline silicon tandem cell. The two junctions consist of the amorphous silicon (a-Si) top cell and the microcrystalline silicon (μc-Si) bottom cell. TEL Solar was the first to integrate boron doped zinc oxyde deposited by low pressure chemical vapour deposition (LPCVD) as the transparent conductive oxide layer, and the first to commercialize the high-efficiency Micromorph process. The majority of its customers upgraded from amorphous single junction to micromorph ( double junction, or ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amorphous Silicon
Amorphous silicon (a-Si) is the non-crystalline form of silicon used for solar cells and thin-film transistors in LCDs. Used as semiconductor material for a-Si solar cells, or thin-film silicon solar cells, it is deposited in thin films onto a variety of flexible substrates, such as glass, metal and plastic. Amorphous silicon cells generally feature low efficiency. As a second-generation thin-film solar cell technology, amorphous silicon was once expected to become a major contributor in the fast-growing worldwide photovoltaic market, but has since lost its significance due to strong competition from conventional crystalline silicon cells and other thin-film technologies such as CdTe and CIGS. Amorphous silicon is a preferred material for the thin film transistor (TFT) elements of liquid crystal displays (LCDs) and for x-ray imagers. Amorphous silicon differs from other allotropic variations, such as monocrystalline silicon—a single crystal, and polycrystalline silicon, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Oxide
Zinc oxide is an inorganic compound with the formula . It is a white powder that is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes. Although it occurs naturally as the mineral zincite, most zinc oxide is produced synthetically. ZnO is a wide-band gap semiconductor of the II-VI semiconductor group. The native doping of the semiconductor due to oxygen vacancies or zinc interstitials is n-type. Other favorable properties include good transparency, high electron mobility, wide band gap, and strong room-temperature luminescence. Those properties make ZnO valuable for a variety of emerging applications: transparent electrodes in liquid crystal displays, energy-saving or heat-protecting windows, and electronics as thin-film transistors and lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microcrystalline
A microcrystalline material is a crystallized substance or rock that contains small crystals visible only through microscopic examination. There is little agreement on the range of crystal sizes that should be regarded as microcrystalline, but the extreme range of values suggested is 1 to 200 microns. See also * Macrocrystalline * Nanocrystalline silicon * Microcrystalline cellulose * Microcrystalline wax * Protocrystalline * Rock microstructure Rock microstructure includes the texture and small-scale structures of a rock. The words ''texture'' and ''microstructure'' are interchangeable, with the latter preferred in modern geological literature. However, ''texture'' is still acceptable b ... References Mineralogy concepts Petrology concepts {{Petrology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stacked Solar Cell
''Stacked'' is an American television sitcom that aired on Fox from April 13, 2005 to January 11, 2006. Premise ''Stacked'' was described as the opposite of ''Cheers'', instead of a smart person in a "dumb" place, it is based on the concept of a dumb person in a "smart" place. A workplace ensemble comedy, ''Stacked'' revolves around Skyler Dayton (Pamela Anderson) who is tired of her non-stop partying lifestyle and bad choices in boyfriends. Wanting a major life change, she wanders into Stacked Books, a small, family-run bookstore owned by Gavin Miller (Elon Gold) and his brother, Stuart ( Brian Scolaro). Divorced and unlucky in love himself, Gavin's inclined to regard Skyler as an embodiment of the vacuous, image-obsessed culture he has come to abhor. Stuart, however, is dazzled by Skyler's beauty and, much to Gavin's horror, offers her a job at their store, which she happily accepts as the first step in her quest for a steadier lifestyle. Unhappy that she is going to be minding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arvind Shah
Professor Arvind M. Shah retired from his professorship in the Department of Sociology at the University of Delhi in 1996. He had been a student of M. N. Srinivas in 1952 and became a teacher in sociology at Maharaja Sayajirao University, Baroda, in 1958. He moved to the University of Delhi in 1961. According to Hetukar Jha, Shah wrote the first paper on the sociological history of India. He was a recipient of the Lifetime Achievement award from the Indian Sociological Society (ISS) in 2009. He had held the office of ISS President in 1992-93 and had been secretary, sometimes jointly, from 1967 to 1972. Publications Among Shah's publications, his ''The Household Dimension of the Family in India'' (1973) is regarded as a landmark study and in 2014 was re-issued in a single volume titled '' The Writings of A. M. Shah: The Household and Family in India'', which included some of his later writings on the subject - ''The Family in India: Critical Essays'' (1998) and ''Essays on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Neuchâtel
The University of Neuchâtel (UniNE) is a French-speaking university based in Neuchâtel, Switzerland. The university has four faculties (schools) and more than a dozen institutes, including arts and human sciences, natural sciences, law and economics. The Faculty of Arts and Human Sciences, with 2,000 students, is the largest school of those that comprise the University of Neuchâtel. The university has an annual budget of CHF 144 million and an annual research fund of CHF 40 million. Approximately 4,000 students, including 600 PhD students attend the university, and more than 600 diplomas, licences, doctorates and certificates are awarded each year. The university has more than 1,100 employees. History The University of Neuchâtel superseded the Academy, which was created in 1838 by King Frederick William IV of Prussia, Prince of Neuchâtel. It awarded licentiate academic degrees in arts and in sciences. In 1848, the Grand Council decreed the closing of the Academy and in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Oxide
Silicon oxide may refer to either of the following: *Silicon dioxide or quartz, SiO2, very well characterized *Silicon monoxide Silicon monoxide is the chemical compound with the formula SiO where silicon is present in the oxidation state +2. In the vapour phase, it is a diatomic molecule. It has been detected in stellar objects and has been described as the most common o ..., SiO, not very well characterized {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portmanteau
A portmanteau word, or portmanteau (, ) is a blend of wordsGarner's Modern American Usage , p. 644. in which parts of multiple words are combined into a new word, as in ''smog'', coined by blending ''smoke'' and ''fog'', or ''motel'', from ''motor'' and ''hotel''. In , a portmanteau is a single morph that is analyzed as representing two (or more) underlying s. When portmanteaus shorten es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
