3D Lifetime Tomography Reveals How CdCl<sub>2</sub> Improves Recombination Throughout CdTe Solar Cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 27862364.
- Also identified by DOI 10.1002/adma.201603801.
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Abstract
Using two-photon tomography, carrier lifetimes are mapped in polycrystalline CdTe photovoltaic devices. These 3D maps probe subsurface carrier dynamics that are inaccessible with traditional optical techniques. They reveal that CdCl<sub>2</sub> treatment of CdTe solar cells suppresses nonradiative recombination and enhances carrier lifetimes throughout the film with substantial improvements particularly near subsurface grain boundaries and the critical buried p-n junction.