High Temperature, Roll-to-Roll CdTe Superstrate Devices Using Flexible Glass

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The National Renewable Energy Laboratory (NREL), Corning Incorporated, and the Colorado School of Mines are developing highly efficient CdTe devices on flexible glass superstrates using high-temperature roll-to-roll processing. This approach combines the high deposition rates available in the existing CdTe manufacturing technologies with the throughput and capital equipment cost reductions offered by roll-to-roll processing and the balance-of-system savings enabled by flexible PV. The processing techniques explored here have the potential for high efficiencies up to 18% and module costs below $0.50/W.