Down-conversion in Tm3+/Yb3+ doped glasses for multicrystalline silicon photo-voltaic module efficiency enhancement

Park, Won Ji; Oh, Seung Jae; Kim, Jong Kyu; Heo, Jong; Wágner, T.; Strizik, Lukas

doi:10.1016/j.jnoncrysol.2013.03.037

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…RE compounds have recently found many applications ranging from up-conversion biomarkers for bio-imaging, agents for cancer diagnostics and treatment, additives in solar power materials, to various sensors [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. The advantages of RE-filled polymer nanocomposites as spectral down-converters are threefold: their RE-based phosphor constituents can have high down-converting efficiency [26][27][28][29][30], they are environment friendly, and the polymer matrix offers smooth coating/form shaping.…”

Section: Introductionmentioning

confidence: 99%

Polymer nanocomposite sunlight spectrum down-converters made by open-air PLD

Darwish

Sarkisov

Wilson

et al. 2020

Nanotechnology Reviews

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We report, for the first time to our knowledge, on the polymer nanocomposite sunlight spectrum down-converters made by the concurrent multi-beam multi-target pulsed laser deposition (CMBMT-PLD) of phosphor and polymer in ambient air. Phosphor PLD targets were made of down-converting rare-earth (RE)-doped fluorides NaYF4:Yb3+,Er3+, and NaYF4:Yb3+,Tm3+ with a Stokes shift of 620 nm (from 360 to 980 nm), minimizing the effect of re-absorption. The phosphors were synthesized by the wet method. Polymer target was made of poly (methyl methacrylate) known as PMMA. Target ablation was conducted with 1,064 nm beams from an Nd:YAG Q-switched laser. Beam intensity was 2.8 × 1016 W/cm2 for both targets. The substrate was a microscope glass slide. Phosphor nanoparticles with a size ranging from 10 to 50 nm were evenly distributed in the polymer matrix during deposition. The nanoparticles retained the crystalline structure and the fluorescent properties of the phosphor target. There was no noticeable chemical decomposition of the deposited polymer. The products of laser-induced reaction of the polymer target with atmospheric gases did not reach the substrate during PLD. Post-heating of the substrate at ∼90°C led to fusion of separate polymer droplets into uniform coating. Quantum yield of the down-conversion polymer nanocomposite film was estimated to be not less than ∼5%. The proposed deposition method can find its application in making commercial-size down-converter coatings for photo-voltaic solar power applications.

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Section: Introductionmentioning

confidence: 99%

Polymer nanocomposite sunlight spectrum down-converters made by open-air PLD

Darwish

Sarkisov

Wilson

et al. 2020

Nanotechnology Reviews

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“…Rare earth (RE) ions are good luminescent candidates for this task [5,6], due to their wide variety of electronic levels, and Yb 3+ ions are particularly suited for c-Si solar cells, due to the 2 F5/2 → 2 F7/2 transition which gives a NIR emission around 1000 nm. Moreover, co-doping with other RE ions has been widely studied for the possibility to enhance the Yb 3+ efficiency via energy transfer and quantum cutting [7,8,9] and nanostructured RE doped glass-ceramics are among the most promising host materials for optical and photovoltaic applications [10,11,12,13,14]. In previous studies we used the sol gel method to develop RE doped silica-hafnia waveguides.…”

Section: Introductionmentioning

confidence: 99%

Silver doping of silica-hafnia waveguides containing Tb 3+ /Yb 3+ rare earths for downconversion in PV solar cells

et al. 2016

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The aim of this paper is to study the possibility to obtain an efficient downconverting waveguide which combines the quantum cutting properties of Tb 3+ /Yb 3+ codoped materials with the optical sensitizing effects provided by silver nanoaggregates. The preparation of 70 SiO2 -30 HfO2 glass and glass-ceramic waveguides by sol gel route, followed by Ag ion-exchange method is reported. The films were subsequently annealed to induce the migration and aggregation of the metal ions. Results of compositional and optical characterization are given, providing evidence for the successful introduction of Ag in the films, while the photoluminescence emission is strongly dependent on the annealing conditions. These films can find potential applications as downshifting layers to increase the efficiency of PV solar cells.

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