《能量转换和 与存储原理》McGehee2011.pptVIP

An Overview of Solar Cell Technology;*;How cheap does PV need to be to compete w/ coal?;Original Source: Deutsche Bank, January 2011; Systems are global (i.e., blended across geographies) My source: R. Swanson, IEEE PV Specialists Conf., June 2011;PV is a booming industry, especially in China;;;More factors that make the plot interesting;Conventional p-n junction photovoltaic (solar) cell;Efficiency limits;Multijunctions: The Road to Higher Efficiencies;Solar Junction World Record;2010 Production by Cell Type;Silicon PV;Simple Cell Technologies continue to improve- 19.6% efficient planar cells on CZ silicon;In September 2011 there were protests at a Chinese PV factory over pollution in the river;;Conclusions on Silicon PV;Thin Film Solar Cells;CdTe Solar Cell with CdS window layer;Cadmium Telluride Solar Cells;*;One reason cells on the roof don’t have 17.3 % efficiency;How much of a problem is the toxicity of Cd?;Cu(InxGa1-x)Se2;Solyndra’s CIGS modules;A comparison of Solyndra’s modules to their competitors;Wind Performance;Ability to Avoid Heating;What went wrong?;;Nanosolar’s Roll-to-Roll Coating;Nanosolar;Nanosolar’s Cell and Module Design;Miasolé;Is there enough Te for CdTe?;The Reserve of Te;The cost of Te;*;Searching for more abundant materials;Solar Cells Using Non-Toxic Abundant Materials;CZTS History;A newer thin film approach: organic solar cells;*;Organic Solar Cells are Rapidly Improving;The world record cell in June 2009: 6.1 %;Reliability;Heliatek Reliability Study;Recommended General Reading List ;Multijunction Cells are Very Expensive;Concentrating Light;Concentration only makessense in sunny places;Cost Estimate of MJ Cells with Concentrators;Martin Green’s Generations of PV Technology;Alta Devices 28.2% efficient thin-film GaAs cell;Alta Devices’ New Record;Si;Silicon can be peeled off too;Is peeling cells from single crystal wafers the way to go?;Conclusions