<Li> 1961 - "Solar Energy in the Developing World" conference is held by the United Nations . </Li> <Li> 1962 - The Telstar communications satellite is powered by solar cells . </Li> <Li> 1963 - Sharp Corporation produces a viable photovoltaic module of silicon solar cells . </Li> <Li> 1964 - Farrington Daniels' landmark book, Direct Use of the Sun's Energy, published by Yale University Press . </Li>

Where was the first silicon photovoltaic cell developed