Fig. 2
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Lattice constant vs. bandgap energy plot of III-V semiconductors. The four different absorber materials used in the IMM4J are marked as blue stars and the two GaInP step-graded metamorphic buffers are marked as red arrows. J1 is the Al0.05Ga0.46In0.49P, J2 is the Al0.14Ga0.86As, J3 is the Ga0.89In0.11As and J4 is the Ga0.73In0.27As cell.
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