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 ,
Bengali Muslim wedding traditional wedding is arranged by Ghotoks (matchmakers), who are generally friends or relatives of the couple, or sometimes just professional matchmakers. The Ghotoks facilitate the couple's introduction to the wedding guests, and are given special gifts called "Ghotokbidae" (lit., "bidding goodbye to the Ghotoks") if the alliance is agreed upon and the marriage is realized. Families traditionally seek their children's matches from the same caste, religion and social standing. In the case of an arranged marriage, if the aforementioned 'compatibility' factors are duly matched, only then is the pairing deemed a raj-jotak (an ideal match). Nowadays (as arranged marriages are