Application of triplet–triplet annihilation upconversion in organic optoelectronic devices: advances and perspectives

C Gao, WWH Wong, Z Qin, SC Lo… - Advanced …, 2021 - Wiley Online Library
Organic semiconductor materials have been widely used in various optoelectronic devices
due to their rich optical and/or electrical properties, which are highly related to their excited …

Towards efficient solid-state triplet–triplet annihilation based photon upconversion: Supramolecular, macromolecular and self-assembled systems

V Gray, K Moth-Poulsen, B Albinsson… - Coordination Chemistry …, 2018 - Elsevier
Photon upconversion through sensitized Triplet–Triplet Annihilation (TTA-UC) has regained
a lot of interest during the last decade mainly due to its potential for significantly increased …

Triplet–triplet annihilation upconversion in a porphyrinic molecular container

H Chen, I Roy, MS Myong, JSW Seale… - Journal of the …, 2023 - ACS Publications
Triplet–triplet annihilation-based molecular photon upconversion (TTA-UC) is a
photophysical phenomenon that can yield high-energy emitting photons from low-energy …

Molecular triplet sensitization and photon upconversion using colloidal semiconductor nanocrystals

Y Han, S He, K Wu - ACS Energy Letters, 2021 - ACS Publications
Colloidal semiconductor nanocrystals have recently emerged as a novel class of
photosensitizers for molecular spin-triplet states. This sensitization strategy combines the …

Efficient triplet exciton fusion in molecularly doped polymer light‐emitting diodes

D Di, L Yang, JM Richter, L Meraldi… - Advanced …, 2017 - Wiley Online Library
DOI: 10.1002/adma. 201605987 probability of a triplet pair forming a singlet) in solution is>
60%, much higher than the spin-statistical prediction of 25%(one pair of triplets collides to …

Visible-to-ultraviolet upconversion efficiency above 10% sensitized by quantum-confined perovskite nanocrystals

S He, X Luo, X Liu, Y Li, K Wu - The Journal of Physical Chemistry …, 2019 - ACS Publications
Photon upconversion (UC) based on sensitized triplet–triplet annihilation (TTA), TTA-UC,
can potentially alleviate the transmission loss of below-band-gap photons in solar energy …

Solving the oxygen sensitivity of sensitized photon upconversion in life science applications

SHC Askes, S Bonnet - Nature Reviews Chemistry, 2018 - nature.com
The conversion of low-energy light into high-energy light, also known as upconversion, can
be exploited in life science applications such as bioimaging and phototherapy. Sensitized …

Optimizing the efficiency of solar photon upconversion

L Frazer, JK Gallaher, TW Schmidt - ACS Energy Letters, 2017 - ACS Publications
Low-energy photons, which are not used by a solar cell, can be converted to higher-energy
photons by photon upconversion. The figure-of-merit of upconvertors, J UC, is given in mA …

Experimentally Observed Reverse Intersystem Crossing‐Boosted Lasing

Z Zhou, C Qiao, K Wang, L Wang… - Angewandte Chemie …, 2020 - Wiley Online Library
Thermally activated delayed‐fluorescent (TADF) materials are anticipated to overcome
triplet‐related losses towards electrically driven organic lasers. Thus far, contributions from …

Solid-state photon upconversion materials: structural integrity and triplet–singlet dual energy migration

B Joarder, N Yanai, N Kimizuka - The Journal of Physical …, 2018 - ACS Publications
Triplet–triplet annihilation-based photon upconversion (TTA-UC) is a process wherein
longer-wavelength light (lower-energy photons) is converted into shorter-wavelength light …