New York metropolitan area to take advantage of New Jersey's relatively lower commercial real estate and rental prices, while offering continued geographic proximity to Manhattan's financial industry ecosystem. Silicon Alley, centered in New York City, has evolved into a metonym for the sphere encompassing the metropolitan region's high technology industries involving the Internet, new media, financial technology ("fintech"), telecommunications, digital media, software development, biotechnology, game design, and other fields within information technology that are supported by its entrepreneurship ecosystem and venture capital investments. In 2015, Silicon Alley generated over US$7.3 billion in venture capital investment, most based in Manhattan, as well as in Brooklyn,
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