Electron spin polarization generated by transport of singlet and quintet multiexcitons to spin-correlated triplet pairs during singlet fissions.

ABSTRACT: Singlet fission (SF) is expected to exceed the Shockley-Queisser theoretical limit of efficiency of organic solar cells. Transport of spin-entanglement in the triplet-triplet pair state via one singlet exciton is a promising phenomenon for several energy conversion applications including quantum information science. However, direct observation of electron spin polarization by transport of entangled spin-states has not been presented. In this study, time-resolved electron paramagnetic resonance has been utilized to observe the transportation of singlet and quintet characters generating correlated triplet-triplet (T + T) exciton-pair states by probing the electron spin polarization (ESP) generated in thin films of 6,13-bis(triisopropylsilylethynyl)pentacene. We have clearly demonstrat

SUBMITTER: Matsuda S 

PROVIDER: S-EPMC8157521 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature