Light, sensitivity

It is unclear at this time how the light sensitivity of OTFTs compares to silicon-based TFTs, but it is certain that similar light-shielding measures must be employed. Studies in our laboratory have shown that, in addition to the photocurrents generated by incident illumination, long-lived light-induced threshold shifts can occur in pen- 

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Light-sensitive glasses Light-sensitive materials Light sources... 

AgBF.-Hp [72259-11-1] colorless water, less sol in alcohol, solben2ene, sol ether dec 200°C, light sensitive... 

Miscellaneous. The reaction products of sahcylaldehyde with certain compounds containing active methylene groups, eg, acetylacetone, are excellent uv absorbers. Films containing these compounds can be used as uv filters to protect light-sensitive foods, wood products, paper, dyes, fibers, and plastics (95). 

Compared to photographic films, BR is handicapped due to its very low light sensitivity. Also, as a possible material for disk-shaped digital optical information storage, BR does not offer an advantage over estabUshed magnetooptical materials ia spite of its higher line resolutioa, because ia both cases... 

The silver perchlorate [7783-93-9] salt, AgClO, is dehquescent and forms a light-sensitive monohydrate that can be dehydrated at 43°C and is soluble in a variety of organic solvents. Explosions of silver perchlorate have been reported (40—42). Gold forms organic perchlorate [42774-61-8] complexes as well as complexes with silver, eg, (CgH )2AgAu(CgF )2C104. 

The initiation of development in the activator solution is more rapid than in conventional processes because the developer molecules need not diffuse into the light-sensitive layers from the processing solution. In spite of the low activity of the coated developer, some unintentional reduction sensitization may occur, which produces unwanted fog. Therefore, coating the developer in a separate layer usually is preferred. Because of simplicity, rapid access, and solution stabihty, incorporated developer papers have been used for office copying appHcations. 

Phthalocyanines have been used to incorporate semiconductor properties in polymers (182) or to develop a thin-film transistor (183). Phthalocyanines and their derivatives can act as dyes in color photography (qv) (184) or electrophotography (185). Light-sensitive compositions for use on Hthographic plates are comprised in part of copper phthalocyanine blue (186). Dichlorosilicon phthalocyanine [19333-10-9] has been used in the... 

The use of phloroglucinol and its derivatives as developer for light-sensitive planographic plates and for other photographic purposes has been described (163—167). 

J. Kosat, Light Sensitive Systems, Wdey Sons, Inc., New York, 1965. 

Fig. 7. Photodimerization of light-sensitive functional groups attached to polymer backbone stmctuies (a) polymer containing photosensitive cinnamic...

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