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The major loss mechanism in the strain-balanced quantum well solar cell is through radiative recombination in the quantum wells. This loss can be reduced through optical manipulation, as fundamentally the radiative emission need only occur in the direction of absorption. In strained quantum well systems, the valence band splits into heavy hole and light hole bands leading to the restriction of emission...
Strain-balanced quantum well solar cells with 50 quantum well layers of In0.11GaAs in the intrinsic region of a GaAs p-i-n solar cell have been studied. Devices have been taken from different positions across 4” wafers from two manufacturing runs on a multi-wafer production reactor. Growth has been compared for devices with and without distributed Bragg reflectors (DBRs), and for devices with and...
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