| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a monolithic semiconductor photovoltaic solar cell comprising a plurality of subcells disposed in series on an electrically conductive substrate. <P>SOLUTION: At least one subcell of the plurality of subcells includes an epitaxially grown self-assembled quantum dot material. The subcells are electrically connected via tunnel junctions. Each of the subcells has an effective bandgap energy. The subcells are disposed in order of increasing effective bandgap energy. The subcell having the lowest effective bandgap energy is closest to the substrate. In certain cases, each subcell is designed to absorb a substantially same amount of solar photons. <P>COPYRIGHT: (C)2012,JPO&INPIT |
