Aerosol synthesis and luminescent properties of CaAl2O4:Eu2+, Nd3+ down-conversion phosphor particles for enhanced light harvesting of dye-sensitized solar cells

Luo, Xiuting; Ahn, Ji Young; Kim, Sung Hyun

doi:10.1016/j.solener.2018.12.029

Cited by 26 publications

(4 citation statements)

References 31 publications

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“…[7] Further, the blue light-emitting CaAl 2 O 4 : Eu 2þ , Nd 3þ nanophosphor played a vital role in downconverting UV light into visible light with the emission maximum at %440 nm, to enhance the device efficiency up to 6.61%. [8] To improve the light-harvesting ability with dc luminescence process and increase the photocurrent of a device, Wu et al introduced Y 2 O 3 :Eu 3þ as a p-type dopant in TiO 2 matrix and achieved the increased PCE of 6.52%. [9] Li et al investigated the effect of Gd 2 O 3 :Sm 3þ as a p-type dopant in TiO 2 photoanode and observed the increased photovoltage by the elevation in energy levels.…”

Section: Introductionmentioning

confidence: 99%

Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

et al. 2021

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Luminescent nanophosphors as spectral converters offer immense potential for dye‐sensitized photovoltaics (DSPV) to harvest a wide range of the solar spectrum. Herein, a novel structural design of DSPV using a downconversion (dc) nanophosphor layer in the TiO2 photoanode for both indoor (ambient) and outdoor applications is demonstrated. Cubic SrF2:Pr3+−Yb3+ nanoparticles are synthesized by a template‐free hydrothermal technique. The dc nanophosphor absorbs photons of the blue region, leading to emission of a broad luminescence band (green and red), which is well matched with N719‐dye absorption. The mixed‐valence state of Pr ions (Pr3+ and Pr4+) leads to trap‐assisted transition levels, which result in a broad visible emission. For the first time, a unique Pr3+−Yb3+ codoped dc system yielding tuned and intensified luminescence by effective crossrelaxation (CR) with a back energy transfer (BET) mechanism is designed and efficient working of the dc nanophosphor‐layered DSPVs under both outdoor 1 sun (AM 1.5 G) and indoor light (Warm‐3200 K; Day‐5000 K) conditions is demonstrated. Improved efficiency of 9.07% is attained in dc‐dye‐sensitized solar cells (DSSC) compared with a control‐DSSC (8.39%) at 1 sun intensity. Under indoor low‐light conditions (1000 lux), the dc‐DSPV achieves high power conversion efficiencies (PCEs) of 14.85 and 15.9%, respectively. This approach results in a 63.44% increment in output power density for dc‐DSPV compared with the control‐DSPV under LED 3200 K irradiation. These findings suggest that this configuration of dc‐layered DSPV can provide a new strategy for future indoor electronic operations under ambient light conditions.

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Section: Introductionmentioning

confidence: 99%

Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

et al. 2021

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“…The CaAl 2 O 4 :Eu 2+ , Nd 3+ DC phosphors incorporated DSSC exhibits enhanced PCE of 6.61% as compared with the pristine TiO 2 photoanodes (5.96%) based DSSC. [ 40 ] Furthermore, the dual role of Y 1.86 WO 6 : (Eu 0.14 ) 3+ DC phosphor compound was explored by Ramkumar et al for the efficiency enhancement of DSSC. [ 41 ] Furthermore, the spectral matching (emission characteristics) of the phosphors was evaluated by comparing the absorption profiles of various dyes (N719 and N749), as shown in Figure .…”

Section: Limitations and Effective Utilization Of Luminescent Materia...mentioning

confidence: 99%

A Review on the Applicability of Luminescent Phosphors and Effective Positioning in Dye‐Sensitized Solar Cells for Enhanced Performance and Stability

Muthu,

Gandhi,

Meenakshisundaram

et al. 2023

Solar RRL

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The narrow range of solar light absorption facilitated by the photoactive organic dyes has been restricting the significant development, and large‐scale applications of dye‐sensitized solar cells (DSSC). The major problem that limits the power conversion efficiency (PCE) of DSSC is the limitations of the organic dyes (light absorbers in DSSC) to absorb beyond the visible region of solar spectrum that resulting in lower PCE (≈13%) as compared with the commercialized technologies. Hence, the focus on developing efficient strategies to harvest the ultraviolet and infrared light regions of the solar spectrum and effective conversion into the absorption limit of dyes and thereby increasing the device performance and stability is the emerging technological development in DSSCs. Rare earth ion‐doped upconversion (UC) and downconversion (DC) phosphors are the most promising solutions for the prevalent issues of the liquid junction solar cells. This review will focus on the emerging strategies for the PCE enhancement of DSSC with UC and DC materials. An exclusive review on the facile approach of simultaneous usage of both the UC and DC phosphors and the effective positioning of these spectral conversion phosphors, to achieve highly stable DSSCs with superior PCE is provided.

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“…The pc-WLEDs as eco-benign products have become the most potential light source in the next generation [1][2][3][4][5][6][7][8][9][10]. Moreover, trivalent rare-earth ions (RE 3+ )-doped aluminate phosphors are appropriate for light-conversion materials owing to their excellent luminescent efficiency, high chemical and thermal stability [5,7,8,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Excellent phosphors not only require suitable host matrix but also appropriate activated ions as emission source. RE 3+ -activated inorganic phosphors are stable and can present strong emission properties owing to the well-known 4f intra-configurational electronic transitions under the UV or near-UV (NUV) irradiation, especially Eu 3+ and Tb 3+ [6,8,11,[22][23][24][25][26]. Since the electrons are well shielded from neighboring ions so sharp and discrete energy levels can be obtained in RE 3+ [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Sol-gel auto-combustion synthesis and luminescence properties of GdCaAl3O7: RE3+ (RE=Eu, Tb, Eu@Tb) phosphors for near-ultraviolet light-triggered indoor illumination

Zhou

Jiang

Chen

et al. 2022

Journal of Luminescence

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The color-tunable GdCaAl3O7: RE 3+ (RE=Eu, Tb, Eu@Tb) phosphors were synthesized via an ultrafast sol-gel auto-combustion synthesis method. The XRD (X-ray diffraction) patterns confirmed the forming of GdCaAl3O7 tetragonal phase, and the SEM (Scanning electron microscopy) images indicated that the obtained products presented honeycomb-like structure due to the gas releasing during the auto-combustion process. The EDS (Energy dispersion spectra) results suggest that Eu 3+ and Tb 3+ were well incorporated into the host matrices of GdCaAl3O7. The luminescent properties, concentration quenching mechanism, energy transfer mechanism, luminescent dynamics, thermal stability and product practicability of GdCaAl3O7: R 3+ (RE=Eu, Tb, Eu@Tb) phosphors were investigated systematically. All the GdCaAl3O7: RE 3+ (RE=Eu, Tb, Eu@Tb) products presented the characteristic emission of doped RE 3+ . Using GdCaAl3O7: 50% Tb 3+ @3.0% Eu 3+ as yellow-emitting phosphors in combination with commercial BAM: Eu 2+ blue-emitting phosphors and a NUV chip can successfully package a warm white LED device with high color rendering index (CRI, 86.3) and low correlated color temperature (CCT, 3348 K) that was very suitable for near-ultraviolet light-triggered indoor illumination.

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Aerosol synthesis and luminescent properties of CaAl2O4:Eu2+, Nd3+ down-conversion phosphor particles for enhanced light harvesting of dye-sensitized solar cells

Cited by 26 publications

References 31 publications

Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

A Review on the Applicability of Luminescent Phosphors and Effective Positioning in Dye‐Sensitized Solar Cells for Enhanced Performance and Stability

Sol-gel auto-combustion synthesis and luminescence properties of GdCaAl3O7: RE3+ (RE=Eu, Tb, Eu@Tb) phosphors for near-ultraviolet light-triggered indoor illumination

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Aerosol synthesis and luminescent properties of CaAl2O4:Eu2+, Nd3+ down-conversion phosphor particles for enhanced light harvesting of dye-sensitized solar cells

Cited by 26 publications

References 31 publications

Trap‐Assisted Transition Energy Levels of SrF2:Pr3+−Yb3+ Nanophosphor in TiO2 Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

Trap‐Assisted Transition Energy Levels of SrF2:Pr3+−Yb3+ Nanophosphor in TiO2 Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

A Review on the Applicability of Luminescent Phosphors and Effective Positioning in Dye‐Sensitized Solar Cells for Enhanced Performance and Stability

Sol-gel auto-combustion synthesis and luminescence properties of GdCaAl3O7: RE3+ (RE=Eu, Tb, Eu@Tb) phosphors for near-ultraviolet light-triggered indoor illumination

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Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells

Trap‐Assisted Transition Energy Levels of SrF₂:Pr³⁺−Yb³⁺ Nanophosphor in TiO₂ Photoanode for Luminescence Tuning in Dye‐Sensitized Photovoltaic Cells