物理学进展2024，Vol.44Issue(3)：112-122,11.DOI:10.13725/j.cnki.pip.2024.03.002
单线态裂分中间态的理论研究进展
Theoretical Insights into the Triplet-Pair State of Singlet Fission
摘要
Abstract
Singlet fission is a photophysical process in organic materials where a photoex-cited singlet exciton splits into two triplet excitons.This process has gained a lot of interest in the past decade for enhancing the efficiency of photovoltaic conversion.Precious work identi-fied a crucial intermediate state in singlet fission,and the construction of the wave function for this correlated triplet-pair state poses a significant challenge.This article serves as a compre-hensive introduction to theoretical models designed for constructing the wave function of the correlated triplet-pair.Subsequently,we delve into an exploration of the intricate effects of vibrational,orbital,and spin interactions on the formation and dissociation of the intermediate state.Finally,we conclude with a succinct summary of the challenges anticipated to shape the landscape of future theoretical research in this field.关键词
单线态裂分/双激发态/电子态耦合/交换相关能Key words
singlet fission/correlated triplet-pair state/electronic coupling/triplet-triplet exchange interaction分类
数理科学引用本文复制引用
童磊,张春峰..单线态裂分中间态的理论研究进展[J].物理学进展,2024,44(3):112-122,11.基金项目
项目受到自然科学基金(Grant NOs.22225305)、重点研发(2022YFB3206900)和南通市民生计划项目支持(MS22022066). （Grant NOs.22225305）
