Upconversion in Er3+-doped fluorite-type crystals pumped by 1.5 μm tunable diode laser

Jouart, J.P.; Mary, G.

doi:10.1016/0022-2313(90)90080-u

Cited by 26 publications

(18 citation statements)

References 31 publications

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“…The occurrence of such a process was, for example, first identified in systems involving a concerted action amongst three electronically excited Pr 3+ ions, in which two ions decay and the third is further excited through the acquisition of their combined energy [97,98]. An iso-ionic process also accounts for green and red emissions from Er 3+ in fluorite-type crystals [99]. Although it is beyond the scope of the present review, there is also an extensive literature reporting energy pooling at high intensities, associated with multiphoton absorption in individual donors -see refs [100][101][102][103] and citations therein; a recent study of the three-photon excited emission of green light from a Tb 3+ -organic complex is a fine example [104].…”

Section: A B A´mentioning

confidence: 99%

Energy harvesting: a review of the interplay between structure and mechanism

Andrews

2008

J. Nanophoton

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Abstract. The science of energy harvesting has recently undergone radical change, with the advent of new materials exploiting mechanisms fundamentally different from those of traditional solar cells. Utilizing principles that are in many cases acquired from breakthroughs in molecular photobiology, the introduction of a range of new synthetic polymers, multichromophore arrays and nanoparticle-based materials heralds a marked resurgence of interest, a shift of focus and heightened expectations in the science of light-harvesting. The interplay between structure and mechanism significantly impinges upon issues extending from fundamental theory to the principles of energy-harvesting materials design. Understanding and exploiting the principles allows materials to be engineered that can harness absorbed energy with heightened efficiency. Two of the key areas of application are dendrimers and rare-earth doped solids.

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Section: A B A´mentioning

confidence: 99%

Energy harvesting: a review of the interplay between structure and mechanism

Andrews

2008

J. Nanophoton

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“…An iso-ionic process also accounts for both green and red emissions from Er 3+ embedded in fluorite-type crystals; see Ref. 55.…”

Section: Rare Earth Materialsmentioning

confidence: 99%

<title>Energy harvesting materials</title>

Andrews

2002

SPIE Proceedings

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It is shown how key features of natural photosynthesis can be emulated in novel materials based on photoactive multichromophore arrays and crystals. A major consideration in the design of such systems is the means of channeling electronic excitation from sites of light absorption to centers where it is stored or released. Storage is often achieved by driving charge separation or, for the longer term, a more complex chemical reaction whilst rapid release is commonly associated with frequency up-converted emission. In each case channeling to the conversion site generally entails a multi-step energy transfer mechanism whose efficiency is determined by the arrangement and electronic properties of the array chromophores or ions, guided in the more complex systems by a spectroscopic gradient that promotes overall directionality. The functional cascade molecules known as photoactive dendrimers are exemplars of this approach. The latest developments involve new mechanisms for concerted excitation transfer in multichromophore systems, leading towards the tailoring and exploitation of optical nonlinearities for high intensity energy pooling applications.

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“…Studies on upconversion using the 1:54 mm excitation wavelength have been concentrated on the Er-doped fluorides BaYF 5 [4], BaY 2 F 8 [5,6], YF 3 [5,7], LiYF 4 [8][9][10], CaF 2 [11], SrF 2 [8][9][10][11][12], CdF 2 [12][13][14], fluorindate glass [15], and vitroceramics [16] as well as the oxides Y 3 Al 5 O 12 ðYAGÞ [8], YAlO 3 [17], and silica glass [17]. In this work a fluoroindate glass doped with Er and Yb has been prepared and analyzed.…”

Section: Introductionmentioning

confidence: 99%