TY - JOUR
T1 - Up- And down-conversion in molecules and materials
AU - Ehrler, Bruno
AU - Yanai, Nobuhiro
AU - Nienhaus, Lea
N1 - Funding Information:
We thank all the authors that have contributed to this exciting collection as well as Judith Thomas, Erinn Brigham, Emily Weiss, and Tim Lian from the editorial office. The work of B.E. was supported by the Dutch Research Council (NWO). The work of N.Y. was supported by the JSPS KAKENHI (Grant Nos. JP20H02713 and JP20K21211).
PY - 2021/2/21
Y1 - 2021/2/21
N2 - This article from the Journal of Chemical Physics termed Up- and Down-Conversion in Molecules and Materials aims to bring together the different ways to convert energy in materials, highlight the common concepts, and define the most promising directions and challenges for future research. Downconversion (DC) describes the conversion of higher-energy particles into single or multiple lower-energy particles. The article highlights examples of singlet fission and lanthanide-based DC systems. Many of the contributions to this article collection focus on singlet fission (SF). The article also shows that in molecules, the particles that carry energy are excitons, and the conversion of exciton energy between a spin-singlet exciton and two spin-triplet excitons can be used for upconversion (UC) or DC. Molecular DC is termed singlet fission (SF), where one singlet exciton is converted into two triplet excitons,1 and molecular UC is termed triplet fusion or triplet–triplet annihilation (TTA), where two spin-triplet excitons combine to form a singlet exciton.
AB - This article from the Journal of Chemical Physics termed Up- and Down-Conversion in Molecules and Materials aims to bring together the different ways to convert energy in materials, highlight the common concepts, and define the most promising directions and challenges for future research. Downconversion (DC) describes the conversion of higher-energy particles into single or multiple lower-energy particles. The article highlights examples of singlet fission and lanthanide-based DC systems. Many of the contributions to this article collection focus on singlet fission (SF). The article also shows that in molecules, the particles that carry energy are excitons, and the conversion of exciton energy between a spin-singlet exciton and two spin-triplet excitons can be used for upconversion (UC) or DC. Molecular DC is termed singlet fission (SF), where one singlet exciton is converted into two triplet excitons,1 and molecular UC is termed triplet fusion or triplet–triplet annihilation (TTA), where two spin-triplet excitons combine to form a singlet exciton.
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U2 - 10.1063/5.0045323
DO - 10.1063/5.0045323
M3 - Review article
C2 - 33607873
AN - SCOPUS:85101392659
SN - 0021-9606
VL - 154
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 7
M1 - 070401
ER -