Assessing Zethrene Derivatives as Singlet Fission Candidates Based on Multiple Descriptors
Assessing Zethrene Derivatives as Singlet Fission Candidates Based on Multiple Descriptors
复制标题
基于多个描述符评估二乙烯衍生物作为单线态裂变候选者
DOI:
10.1021/acs.jpcc.0c08160
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Marom, Noa
中科院分区:
文献类型:
--
作者:
Liu, Xingyu;Tom, Rithwik;Gao, Siyu;Marom, Noa
Singlet fission (SF) is a process where one singlet exciton splits into two triplet excitons. Utilizing SF may potentially increase the efficiency of solar cells beyond the Shockley–Queisser limit. To discover new SF materials, predictive descriptors for SF performance are needed. We consider multiple descriptors to assess several zethrene derivatives as candidate materials for intermolecular SF in the solid state. The descriptors include single molecule multiradical characters, many-body perturbation theory calculations of the thermodynamic driving force for SF and the singlet exciton charge transfer character in crystals, and a kinetic model based on molecular dimers extracted from the crystal structures. The zethrenes are compared to acenes known to exhibit SF with respect to these descriptors. The results indicate that all zethrene and heptazethrene derivatives studied here may exhibit SF. In particular, 7,14-bis(2,4,6-trimethylphenyl)dibenzo[de,mn]naphthacene (Z-T) emerges as a promising candidate. Its SF driving force is higher than tetracene, whose fission process is slightly endoergic, but lower than pentacene. Its singlet exciton charge transfer character is close to pentacene, and its crystal packing leads to a higher SF rate than other zethrene derivatives. Therefore, it may undergo fast SF with high energy efficiency. The approach of considering multiple descriptors may be useful for evaluating additional candidate materials for SF.
登录
查看更多内容
影响因子:
4.4
作者:
A. Shushin
通讯作者:
A. Shushin
影响因子:
1.7
作者:
Nakano, Masayoshi;Fukui, Hitoshi;Kamada, Kenji
通讯作者:
Kamada, Kenji
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Sumit Naskar;Mousumi Das
通讯作者:
Mousumi Das
影响因子:
5.7
作者:
Minami, Takuya;Nakano, Masayoshi
通讯作者:
Nakano, Masayoshi
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
大図慎吾;石塚智也;平井雄一郎;福住俊一;小島隆彦;Masayoshi Nakano
通讯作者:
Masayoshi Nakano