Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.267401
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Funding
- Swiss NSF [PA00P2-134127]
- U.S. DOE, BES [DE-SC0001009]
- NSF [DMR-0906805]
- Swiss National Science Foundation (SNF) [PA00P2_134127] Funding Source: Swiss National Science Foundation (SNF)
- Direct For Mathematical & Physical Scien [0906805] Funding Source: National Science Foundation
- Division Of Materials Research [0906805] Funding Source: National Science Foundation
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We present a theoretical study of the broadening of defect luminescence bands due to vibronic coupling. Numerical proof is provided for the commonly used assumption that a multidimensional vibrational problem can be mapped onto an effective one-dimensional configuration coordinate diagram. Our approach is implemented based on density functional theory with a hybrid functional, resulting in luminescence line shapes for important defects in GaN and ZnO that show unprecedented agreement with experiment. We find clear trends concerning effective parameters that characterize luminescence bands of donor- and acceptor-type defects, thus facilitating their identification. DOI: 10.1103/PhysRevLett.109.267401
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