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Updated: Mar 12, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
11:26

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

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基于近红外可激发量子点的高效三倍三倍灭绝上转换,具有创纪录的反斯托克斯转移通过低覆盖的单聚-BODIPY合物

Ran Li1, Lin-Han Jiang1, Lin Xi2

  • 1Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, State Key Laboratory of Medicinal Chemical Biology, Haihe Laboratory of Sustainable Chemical Transformations, College of Chemistry, Nankai University Tianjin 300071 P. R. China huangl1@nankai.edu.cn dwpang@whu.edu.cn.

Chemical science
|March 11, 2026
PubMed
概括

研究人员开发了一种用于硫化量子点 (PbS QDs) 的新型连接体,以改善光子上转换. 这一进步提高了三倍三倍的消灭升级转换效率和稳定性,用于先进的材料应用.

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Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
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Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
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Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
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