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Proposed model showing the relationship between surface structure and excitonic emission, trapping and non-radiative processes in (a) Cd-Rich and (b) Te-rich CdTe, respectively. (c) and (d) Energy level diagrams showing the various radiative and non-radiative processes for high-energy trap states such as from TDPA/TBP ligands and lower-energy trap states such as from thiol ligands, respectively. Rates, Ri, and rate constants, ki, are related in equations (4) and (5).
