Tin telluride wavelength range. The alloyed material has been used in mid- IR photodetectors and thermoelectric generator. Tin telluride Tin telluride is a compound of tin and tellurium (SnTe); is a IV-VI narrow band gap semiconductor and has direct band gap of 0.18 eV. It is often alloyed with lead to make lead tin telluride, which is used as an infrared detector material. Tin telluride normally forms p-type semiconductor (Extrinsic semiconductor) due to tin vacancies and is a low temperature superconductor. SnTe exists in 3 crystal phases. At Low temperatures, where the concentration of hole carriers is less than 1.5x10 cm ,
Anniversary Trouble Anniversary Trouble Anniversary Trouble is a 1935 "Our Gang" short comedy film directed by Gus Meins. It was the 134th "Our Gang" short (46th talking episode) that was released. Spanky's appointment as treasurer of the Ancient and Honery Order of Woodchucks occurs on the same day as his parents' wedding anniversary. Spanky's father (Johnny Arthur) puts money in an envelope as an anniversary gift for his wife (Claudia Dell), then absent-mindedly uses the envelope as a bookmark. Spanky's mother sees Spanky hide the gang's club money in a cookie jar and jumps to the conclusion that Spanky stole her gift