Enhanced Photovoltaic Performance of Perovskite Solar Cells Based on Er-Yb Co-doped TiO2 Nanorod Arrays

Wang, Xiaoli; Zhang, Zhenlong; Qin, Jianqiang; Shi, Wenjia; Liu, Yuefeng; Gao, Huiping; Mao, Yanli

doi:10.1016/j.electacta.2017.06.032

Cited by 70 publications

(46 citation statements)

References 33 publications

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“…The enhanced light‐scattering capability of composite photoanodes is confirmed by the increasing light reflectance with an increase in UCPs incorporated into TiO 2 films, as reflected in diffuse reflectance spectra as shown in Figure c. Moreover, the slight enhancement of V oc might be due to the conduction band shifting of TiO 2 , which caused by the diffusion of Er 3+ with higher Fermi energy in TiO 2 lattice during the annealing process of the photoanode films …”

Section: Resultsmentioning

confidence: 81%

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Mao

Jing

et al. 2019

Physica Status Solidi (a)

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An efficient photoanode for dye‐sensitized solar cells (DSSCs) requires a particular feature of high light harvesting. Herein, a promising new type of upconversion phosphors (UCPs)‐TiO2 composite photoanode for enhanced light harvesting in DSSCs is designed, resorting to the use of commercial upconversion β‐NaYF4:Yb3+, Er3+ phosphors with submicrometer‐sized irregular shapes. The excellent light scattering coupled with an additional near‐infrared light‐harvesting effect of upconversion β‐NaYF4:Yb3+, Er3+ nanoparticles contribute to the greatly enhanced light harvesting. Meanwhile, the incorporation of such UCPs into photoanodes involves the aggravation of charge recombination at the interface of photoanode–electrolyte; this unfavorable influence is minimized via the coating of a thin TiO2 layer on UCPs. The successful balance of the competition between such positive and negative impacts results in an optimal weight ratio of 15% for UCPs/TiO2; the corresponding DSSC delivers a power conversion efficiency (PCE) up to 7.17%, much higher than that of 5.45% for the bare TiO2 nanoparticle‐based device. This study highlights the great contributions of commercial β‐NaYF4:Yb3+, Er3+ UCPs to the efficient light harvesting for enhanced photovoltaic performance of DSSCs.

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Section: Resultsmentioning

confidence: 81%

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Mao

Jing

et al. 2019

Physica Status Solidi (a)

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“…Wang et al., was successful in fabricating effective PSCs with enhanced photovoltaic performance by introducing Er 3+ and Yb 3+ codoped TiO 2 nanorod arrays as an electron transport layer. The reported experimental data revealed that higher V oc and I sc may be due to larger distance between the conduction band of Er 3+ ‐Yb 3+ : TiO 2 layer and perovskite absorber and reduced charge recombination, faster charge transport offered by Er 3+ ‐Yb 3+ : TiO 2 nanoarrays . The PCE of the luminescent UC materials based solar cells is limited by their poor UC efficiency.…”

Section: Dc/uc Phosphors For Dsc/psc Applicationsmentioning

confidence: 99%

“…The reported experimental data revealed that higher V oc and I sc may be due to larger distance between the conduction band of Er 3 + -Yb 3 + : TiO 2 layer and perovskite absorber and reduced charge recombination, faster charge transport offered by Er 3 + -Yb 3 + : TiO 2 nanoarrays. [146] The PCE of the luminescent UC materials based solar cells is limited by their poor UC efficiency. To overcome this drawback Zhou et al, demonstrated PSCs with semiconductor plasmon based mCu 2-x S@SiO 2 @ Er 2 O 3 (MCSE) nanocomposites that exhibits high upconversion luminescence under 980 nm excitation.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Recent Progress and Emerging Applications of Rare Earth Doped Phosphor Materials for Dye‐Sensitized and Perovskite Solar Cells: A Review

Rajeswari

Islavath

Raghavender

et al. 2019

The Chemical Record

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Although the efficiency of Dye‐sensitized and Perovskite solar cell is still below the performance level of market dominance silicon solar cells, in last few years they have grabbed significant attention because of their fabrication ease using low‐cost materials, and henceforth these cells are considered as a promising alternative to commercial photovoltaic devices. However, third generation solar cells have significant absorption in the visible region of solar spectrum, which confines their power conversion efficiency. Subsequently, the performance of current photovoltaics is significantly hampered by the transmission loss of sub‐band‐gap photons. To overcome these issues, rare earth doped luminescent materials is the favorable route followed to convert these transmitted sub‐band‐gap photons into above‐band‐gap light, where solar cells typically have significant light‐scattering effects. Moreover, the rare earth based down/up conversion material facilitates the improvement in sensitization, light‐scattering and device stability of these devices. This review provides insight into the application of various down/up conversion materials for Dye‐sensitized and perovskite solar cell applications. Additionally, the paper discusses the techniques to improve the photovoltaic performance in terms of current density and photo voltage in detail.

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“…36 Thus, TiO 2 doped with Er 3+ or Er 3+ /Yb 3+ is prepared as nanoparticles or thin lms and used in solar cells and photocatalysts. 37,38 Despite the many advantages of TiO 2 :Er/Yb with UC properties, studies on optical property optimization and application as security materials have not been carried out systematically.…”

Section: Introductionmentioning

confidence: 99%

Aerosol synthesis of TiO₂:Er³⁺/Yb³⁺ submicron-sized spherical particles and upconversion optimization for application as anti-counterfeiting materials

Jung

2020

RSC Adv.

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Enhanced Photovoltaic Performance of Perovskite Solar Cells Based on Er-Yb Co-doped TiO2 Nanorod Arrays

Cited by 70 publications

References 33 publications

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Recent Progress and Emerging Applications of Rare Earth Doped Phosphor Materials for Dye‐Sensitized and Perovskite Solar Cells: A Review

Aerosol synthesis of TiO₂:Er³⁺/Yb³⁺ submicron-sized spherical particles and upconversion optimization for application as anti-counterfeiting materials

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Enhanced Photovoltaic Performance of Perovskite Solar Cells Based on Er-Yb Co-doped TiO2 Nanorod Arrays

Cited by 70 publications

References 33 publications

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Commercial Upconversion Phosphors with High Light Harvesting: A Superior Candidate for High‐Performance Dye‐Sensitized Solar Cells

Recent Progress and Emerging Applications of Rare Earth Doped Phosphor Materials for Dye‐Sensitized and Perovskite Solar Cells: A Review

Aerosol synthesis of TiO2:Er3+/Yb3+ submicron-sized spherical particles and upconversion optimization for application as anti-counterfeiting materials

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Aerosol synthesis of TiO₂:Er³⁺/Yb³⁺ submicron-sized spherical particles and upconversion optimization for application as anti-counterfeiting materials