Silicon Alley rapid halt during the early 2000s recession. During this economic contraction, many internet companies in Silicon Alley folded. The recession also affected publications that covered the sector. After the dot-com bust, the "Silicon Alley Reporter" was rebranded as "Venture Reporter", in September 2001, and sold to Dow Jones. Self-financed AlleyCat News ceased publication in October 2001. A couple of years after the dot-com bust, Silicon Alley began making its comeback with the help of NY Tech Meetup, and NextNY. On December 19, 2011, then Mayor Michael R. Bloomberg announced his choice of Cornell University and Technion-Israel Institute of Technology to
Polycrystalline silicon grain boundaries, see figure 1. The resistivity, mobility, and free-carrier concentration in monocrystalline silicon vary with doping concentration of the single crystal silicon. Whereas the doping of polycrystalline silicon does have an effect on the resistivity, mobility, and free-carrier concentration, these properties strongly depend on the polycrystalline grain size, which is a physical parameter that the material scientist can manipulate. Through the methods of crystallization to form polycrystalline silicon, an engineer can control the size of the polycrystalline grains which will vary the physical properties of the material. The use of polycrystalline silicon in the production of solar cells requires