Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells

Lahoz, F.; Pérez-Rodríguez, C.; Hernández, S.; Martı́n, I.R.; Lavı́n, V.; Rodrı́guez-Mendoza, U.R.

doi:10.1016/j.solmat.2011.01.027

Cited by 105 publications

(39 citation statements)

References 20 publications

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“…32 Upconversion materials are of particular interest for solar cell application because these materials utilize the IR region of the solar spectrum which is transmitted by solar cells. 15,[33][34][35][36][37][38] The emission spectra of the Gd 2 (MoO 4 ) 3 :Er 3+ /Yb 3+ upconversion nanophosphor upon excitation at a wavelength of 980 nm are shown in Fig. 4(a) and (b).…”

Section: Resultsmentioning

confidence: 99%

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

Kumar

Gupta

2015

RSC Adv.

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We have successfully synthesized rare-earth doped gadolinium molybdate Gd 2 (MoO 4 ) 3 :Re 3+ (Re 3+ ¼ Eu 3+ , Tb 3+ , Tm 3+ and Er 3+ /Yb 3+ ) nanophosphors for solar cell application as a broad spectral converter from the ultraviolet (UV) to the near infrared (NIR) regions in a single host lattice using a facile solid state reaction method. The gross structure, surface morphology and microstructure of these nanophosphors have been investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission/high-resolution transmission electron microscopy (TEM/HRTEM) techniques , respectively. and Gd 2 (MoO 4 ) 3 :Tm 3+ nanophosphors demonstrate a strong green emission at 541 nm and a deep blue emission at 453 nm upon an excitation wavelength of 378 nm and 266 nm, respectively. Moreover, the upconversion characteristic of the Gd 2 (MoO 4 ) 3 :Er 3+ /Yb 3+ nanophosphor exhibits strong green emission at 545 nm and red emission at 657 nm corresponding to 4 S 3/2 -4 I 15/2 and 4 F 9/2 -4 I 15/2 transitions respectively. Furthermore, the Gd 2 (MoO 4 ) 3 :Er 3+ /Yb 3+ upconversion nanophosphor emits in the NIR spectrum region at 994 nm upon a 980 nm excitation wavelength. Hence, the obtained PL emission results with a lifetime in milliseconds reveal that these nanophosphors could be futuristic promising broad spectral converter phosphors which may possibly integrate with the next-generation Si-solar cell to enhance the efficiency of the cell.

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Section: Resultsmentioning

confidence: 99%

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

Kumar

Gupta

2015

RSC Adv.

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“…Unlike the nanoparticles, bulk upconversion luminescence glass with good mechanical property has been used in solar cell [18]. Lahoz et al [19] reported the application of Ho 3+ doped glass-ceramic materials via direct melting glass to further improve the conversion efficiency of the Si solar cells. However, most of bulk upconversion glass/ceramic materials were fabricated by traditional melt-quenching.…”

Section: Introductionmentioning

confidence: 99%

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Lia

Lin

et al. 2017

J Adv Ceram

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Er 3+ /Yb 3+ codoped niobium pentoxide glasses were fabricated by the aerodynamic levitation (ADL) method with rapid cooling rate. All samples with various doping concentrations showed good upconversion luminescence properties under 980 nm laser excitation. The structure, transmittance spectrum, and luminescence properties of the samples were systemically investigated by XRD, UV-Vis-NIR spectrophotometer, and upconversion spectra. All transparent samples exhibited green and red upconversion emissions centered at 532, 547, and 670 nm. Experimental results showed that the sample codoped with 1 mol% Er 3+ /Yb 3+ has the strongest upconversion emissions, and the increase of the doped Yb 3+ concentration results in the increased red emission and reduced green emission. The logI-logP plot of green emission indicated that the green emissions reach the saturation at high pump power excitation, deviating from the low-power regime. After one-photon energy transfer (ET) process, 4 I 11/2 + 4 I 11/2 → 4 F 7/2 + 4 I 15/2 process between the two neighboring Er 3+ ions was responsible for the population of the 4 S 3/2 / 4 H 11/2 states. The niobium pentoxide codoped with Er 3+ /Yb 3+ bulk glasses could be used in the dye sensitized solar cell (DSSC) to improve the efficiency.

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“…Among various possible upconversion systems [3][4][5] lanthanidedoped materials are of particular interest. [5][6][7][8][9][10][11][12][13] Lanthanides are the elements 57 (La) to 71 (Lu) in the periodic table for which the 4f inner shell is being filled up to 14 electrons. Lanthanides usually occur in their trivalent form (Ln 3+ ) in which they have n electrons in the 4f shell, providing 14 n possible electron configurations, each with a different energy level.…”

Section: Introductionmentioning

confidence: 99%

“…Such concentrated photovoltaic (CPV) systems generally are also equipped with type III-V solar cells. At variance with most research on the subject of enhancing solar cell performance using lanthanide upconverters, 3,4,9,16,18,[20][21][22][23][24][25][26][27] the current study focuses on the use of broadband illumination utilizing a flash light set-up instead of laser excitation at specific wavelengths. This is done to more closely approach the conditions under which the system should perform in any practical application.…”

Section: Introductionmentioning

confidence: 99%

Er³⁺/Yb³⁺ upconverters for InGaP solar cells under concentrated broadband illumination

Feenstra

Six

Asselbergs

et al. 2015

Phys. Chem. Chem. Phys.

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aThe inability of solar cell materials to convert all incident photon energy into electrical current, provides a fundamental limit to the solar cell efficiency; the so called Shockley-Queisser (SQ) limit. A process termed upconversion provides a pathway to convert otherwise unabsorbed low energy photons passing through the solar cell into higher energy photons, which subsequently can be redirected back to the solar cell. The combination of a semi-transparent InGaP solar cell with lanthanide upconverters, consisting of ytterbium and erbium ions doped in three different host materials (Gd 2 O 2 S, Y 2 O 3 and NaYF 4 ) is investigated.Using sub-band gap light of wavelength range 890 nm to 1045 nm with a total accumulated power density of 2.7 kW m À2 , a distinct photocurrent was measured in the solar cell when the upconverters were applied whereas a zero current was measured without upconverter. Furthermore, a time delay between excitation and emission was observed for all upconverter systems which can be explained by energy transfer upconversion. Also, a quadratic dependence on the illumination intensity was observed for the NaYF 4 and Y 2 O 3 host material upconverters. The Gd 2 O 2 S host material upconverter deviated from the quadratic illumination intensity dependence towards linear behaviour, which can be attributed to saturation effects occurring at higher illumination power densities.

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Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells

Cited by 105 publications

References 20 publications

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Er³⁺/Yb³⁺ upconverters for InGaP solar cells under concentrated broadband illumination

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Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells

Cited by 105 publications

References 20 publications

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Er3+/Yb3+ upconverters for InGaP solar cells under concentrated broadband illumination

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Product

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Er³⁺/Yb³⁺ upconverters for InGaP solar cells under concentrated broadband illumination