Comparison of two ways using Ag nanoparticles to improve the performance of dye-sensitized solar cells

Qin, Longgui; Liu, Deye; Zhang, Yiqun; Zhao, Peilu; Zhou, Linsheng; Liu, Yueying; Liu, Fengmin; Lu, Geyu

doi:10.1016/j.electacta.2018.01.091

Cited by 6 publications

(1 citation statement)

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“…To date, such UCPs have attracted widespread attention to enhance the LHE in DSSCs in view of two remarkable advantages: 1) UCPs are capable of converting NIR photons into visible photons, resulting in broadened light absorption and increased photogenerated electrons; 2) UCPs can play a role of light scattering, which will extend the transmission distance of the incident light, contributing to an increase in the LHE . Therefore, the particle size of the UCPs incorporated into the photoanodes should be submicronmeter or a little smaller to meet the light‐scattering demand and match well with nanocrystalline TiO 2 The simulation results further reveal that only those particles sharing dimensions comparable to the wavelength of light contribute to effective Mie scattering effect …”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%