Phosphor positioning for effective wavelength conversion in dye-sensitized solar cells

Kim, Chang Woo; Kim, Do Kyoung; Shin, Woo Jin; Choi, Mi Jin; Kang, Yong Soo; Kang, Young Soo

doi:10.1016/j.nanoen.2015.03.043

Cited by 25 publications

(25 citation statements)

References 45 publications

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“…To date, out of a large number of strategies for PCE enhancement in perovskite solar cells, few have been successful 20, 21 . In this aspect, we have recently reported highly qualified phosphor materials 22 for wavelength conversion, showing that their utilization in DSSCs increases the extent of photon absorption by organic dyes 23 . We have successfully demonstrated that phosphor-induced wavelength conversion of solar light is a promising solution for improving light harvesting efficiency, in agreement with theoretical predictions 23, 24 .…”

Section: Introductionmentioning

confidence: 99%

“…In this aspect, we have recently reported highly qualified phosphor materials 22 for wavelength conversion, showing that their utilization in DSSCs increases the extent of photon absorption by organic dyes 23 . We have successfully demonstrated that phosphor-induced wavelength conversion of solar light is a promising solution for improving light harvesting efficiency, in agreement with theoretical predictions 23, 24 . In the present work, to the best of our knowledge, we present a first time report of amplified wavelength conversion using both localized surface plasmon resonance (LSPR) and a down-conversion phosphor for the utilization of unused UV light for the enhancement of photovoltaic efficiency and durability of perovskite solar cells.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Function Au@Y2O3:Eu3+ Smart Film for Enhanced Power Conversion Efficiency and Long-Term Stability of Perovskite Solar Cells

Kim

Eom

Yang

et al. 2017

Sci Rep

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In the present study, a dual-functional smart film combining the effects of wavelength conversion and amplification of the converted wave by the localized surface plasmon resonance has been investigated for a perovskite solar cell. This dual-functional film, composed of Au nanoparticles coated on the surface of Y2O3:Eu3+ phosphor (Au@Y2O3:Eu3+) nanoparticle monolayer, enhances the solar energy conversion efficiency to electrical energy and long-term stability of photovoltaic cells. Coupling between the Y2O3:Eu3+ phosphor monolayer and ultraviolet solar light induces the latter to be converted into visible light with a quantum yield above 80%. Concurrently, the Au nanoparticle monolayer on the phosphor nanoparticle monolayer amplifies the converted visible light by up to 170%. This synergy leads to an increased solar light energy conversion efficiency of perovskite solar cells. Simultaneously, the dual-function film suppresses the photodegradation of perovskite by UV light, resulting in long-term stability. Introducing the hybrid smart Au@Y2O3:Eu3+ film in perovskite solar cells increases their overall solar-to-electrical energy conversion efficiency to 16.1% and enhances long-term stability, as compared to the value of 15.2% for standard perovskite solar cells. The synergism between the wavelength conversion effect of the phosphor nanoparticle monolayer and the wave amplification by the localized surface plasmon resonance of the Au nanoparticle monolayer in a perovskite solar cell is comparatively investigated, providing a viable strategy of broadening the solar spectrum utilization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual-Function Au@Y2O3:Eu3+ Smart Film for Enhanced Power Conversion Efficiency and Long-Term Stability of Perovskite Solar Cells

Kim

Eom

Yang

et al. 2017

Sci Rep

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“…[19][20][21][22] These tremendous effort have been focused on enhancement of η lh in the range of visible spectrum. [23][24][25][26] Strategies for enhancing the absorption of the UV and IR portion of the solar spectrum have received little attention for efficient DSSCs performance. [23][24][25][26] Strategies for enhancing the absorption of the UV and IR portion of the solar spectrum have received little attention for efficient DSSCs performance.…”

Section: Introductionmentioning

confidence: 99%

“…However, these approaches are fundamentally limited in their ability to enhance the absorption of ultraviolet (UV) and Nearinfrared (NIR) radiation, which constitute over 60% of the solar spectrum. 23,26 Introducing a phosphor material to modify the solar spectrum to be absorbed by the dye molecules is an outstanding strategy for utilizing the solar photon energy in the UV and NIR range. An effective alternate approach is to modify the solar wavelength spectrum available for absorption by the dye molecules, through wavelength conversion, using phosphor materials.…”

Section: Introductionmentioning

confidence: 99%

“…[31][32][33][34] Phosphor materials can convert a portion of solar spectrum into different band of spectrum via three types of photon luminescence conversion processes, namely up-conversion, down-conversion, and downshifting. [36][37][38][39] In this work, based on our previous report on successful introduction of downshifting phosphor into DSSCs, 26 we suggest a facile strategy to improve solar light harvesting of photovoltaics by combining the wavelength conversion effect exhibited by up-conversion β-NaYF 4 :Yb 3+ ,Er 3+ phosphor microcrystals with the C106 organometallic dye, which shows the best light-harvesting performance among new-generation high-absorption-coefficient dyes as shown in Fig. However, the up-conversion process converts the low-energy part of the solar spectrum into higher energy wavelength.…”

Section: Introductionmentioning

confidence: 99%

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Wavelength conversion effect-assisted dye-sensitized solar cells for enhanced solar light harvesting

et al. 2016

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aIn the present study, an enhanced solar light harvesting strategy based on the wavelength conversion effect is suggested in dye-sensitized solar cells (DSSCs). Incorporating β-NaYF4:Yb 3+ ,Er 3+ phosphor microcrystals as a component of the DSSCs enables wavelength conversion from infrared to visible light, which maximizes the absorption of visible light by the C106 organometallic dye and produces excess current, thus enhancing the quantum efficiency. It is demonstrated that the photocurrent density generated is increased by the wavelength conversion effect of the phosphor material. The introduction of up-converting β-NaYF4:Yb 3+ ,Er 3+ phosphor microcrystals dispersed in an iodide electrolyte and the use of an additional phosphor reflecting film increases the overall solar-to-electrical energy conversion efficiency (η) from 9.02% of reference DSSCs to 9.48 and 10.76%, respectively. DSSCs with phosphors contained in both the iodide electrolyte solution as well as an additional phosphor reflecting film show a highly enhanced overall efficiency of 10.90%. Herein, a strategy for effective wavelength conversion is investigated for enhanced solar light harvesting, and the results of the study contribute the most viable strategy for achieving maximum utilization of the solar spectrum.

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Swift Photochromic Smart Window Based on Plasmonic Yolk‐Shell Nanophosphors

Kim

Santoro²,

Pawar³

et al. 2022

Advanced Optical Materials

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Herein, the fabrication of eccentric Ag@Void@Y2SiO5:Pr3+ plasmonic yolk‐shell nanophosphors (PYSNPs) with high up‐conversion efficiency, and their incorporation on photochromic WO3 layers, is demonstrated to fabricate photochromic smart windows with high coloration contrast and swift color change. The up‐conversion efficiency of the Pr3+ ion‐doped Y2SiO5 (Y2SiO5:Pr3+) nanoshells is enhanced by about 50% through the incorporation of carefully designed plasmonic Ag cores placed inside their hollow cavities. Introduction of these geometry‐optimized plasmonic nanophosphors at the surface of photochromic WO3 films results in about 24‐fold and tenfold enhancements of their coloration rate and kinetic constant, respectively. The strategy adopted for designing and fabricating the Ag@Void@Y2SiO5:Pr3+ PYSNPs and their subsequent incorporation in conventional photochromic films offers an exciting approach for fabricating photochromic smart windows with dynamically controlled transmission of solar radiation, which is a promising technology for reducing energy consumption associated with heating, ventilation, and air‐conditioning of buildings.

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Phosphor positioning for effective wavelength conversion in dye-sensitized solar cells

Cited by 25 publications

References 45 publications

Dual-Function Au@Y2O3:Eu3+ Smart Film for Enhanced Power Conversion Efficiency and Long-Term Stability of Perovskite Solar Cells

Dual-Function Au@Y2O3:Eu3+ Smart Film for Enhanced Power Conversion Efficiency and Long-Term Stability of Perovskite Solar Cells

Wavelength conversion effect-assisted dye-sensitized solar cells for enhanced solar light harvesting

Swift Photochromic Smart Window Based on Plasmonic Yolk‐Shell Nanophosphors

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