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A cautionary tale of singlet fission
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Singlet fission (SF) is a process exclusive to organic semiconducting materials, in which one singlet exciton is converted into two triplet excitons when the energy criteria of the system are met. Observed in organic crystals in the 1960s, the interest in SF has recently increased due to its potential for exceeding the Shockley-Queisser limit in photovoltaic applications. Despite numerous experimental and theoretical studies on various organic chromophores, there is a general agreement that the correlated triplet pair (TT) state is a crucial intermediate step in the transformation from singlet to triplet. However, many researchers have oversimplified the SF process, leading to inadequate interpretations of time-resolved data. This talk will discuss these issues through two examples and emphasize the importance of designing spectroscopic experiments for proper SF dynamics interpretation.
발표코드
2O7-2 (14:20-14:40)
발표일정
2006-04-06 11:00 - 11:40