3D Lifetime Tomography Reveals How CdCl2 Improves Recombination Throughout CdTe Solar Cells. Issue 3 (15th November 2016)

• Record Type: Journal Article
• Authors: Barnard, Edward S.; Ursprung, Benedikt; Colegrove, Eric; Moutinho, Helio R.; Borys, Nicholas J.; Hardin, Brian E.; Peters, Craig H.; Metzger, Wyatt K.; Schuck, P. James
• Is Part Of: Advanced materials. Volume 29:Issue 3(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-11-15
• Subjects: CdTe -- CdCl2 -- photovoltaics -- tomography -- two‐photon; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201603801
• Languages: English
• ISSNs: 0935-9648

Abstract

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 CdCl2 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.