Dual-functional semiconductor-decorated upconversion hollow spheres for high efficiency dye-sensitized solar cells

Liao, Wenming; Zheng, Dajiang; Tian, Jianhua; Lin, Zhiqun

doi:10.1039/c5ta06238a

Cited by 35 publications

(14 citation statements)

References 37 publications

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“…They have been extensively utilized in bioimaging, photodynamic therapy, lighting, lasing, optical communications, and potential 3D display . Recent studies have also shown that proper hybridization of UCNPs with perovskites can increase the energy conversion efficiency of solar light . Moreover, the distinctive characteristics of UCNPs, such as large anti‐Stokes shift, sharp absorption and emission band, no photobleaching, no photoblinking, and stable inorganic chemical composition, have also made them perfect candidates for special applications such as thermal imaging, night vision telescope, and remote distance measurement .…”

Section: Introductionmentioning

confidence: 99%

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Yang

Wang

Tian

et al. 2018

Adv Funct Materials

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Organolead halide perovskites (OHPs) have shown unprecedented potentials in optoelectronics. However, the inherent large bandgap has restrained its working wavelength within 280-800 nm, while light at other regions, e.g., near-infrared (NIR), may cause drastic thermal heating effect that goes against the duration of OHP devices, if not properly exploited. Herein, a solution processable and large-scale synthesis of multifunctional OHP composites containing lanthanide-doped upconversion nanoparticles (UCNPs) is reported. Upon NIR illumination, the upconverted photons from UCNPs at 520-550 nm can be efficiently absorbed by closely surrounded OHP nanowires (NWs) and photocurrent is subsequently generated. The narrow full width at half maximum of the absorption of rare earth ions (Yb 3+ and Er 3+ ) has ensured high-selective NIR response. Lifetime characterizations have suggested that Förster resonance energy transfer with an efficiency of 28.5% should be responsible for the direct energy transfer from UCNPs to OHP NWs. The fabricated proof-of-concept device has showcased perfect response to NIR light at 980 and 1532 nm, which has paved new avenues for applications of such composites in remote control, distance measurement, and stealth materials.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201801782. mobility, tunable direct bandgap, long electron-hole diffusion distance, as well as the merits of low-cost and earth-abundant, organolead halide perovskites (OHPs) with a general chemical formula of APbX 3 (A = organic ammonium cation, X = halide anion) have recently drawn unprecedented attention as a type of photoactive materials with competitive performance in the areas of optical, electronic, and optoelectronic devices. [1][2][3][4][5][6][7] A typical example is the exponentially increased studies on perovskite in solar energy conversion, the effort from which has pushed rapid and continuous improvement of the energy conversion efficiency from originally 3.8% to currently 22.1%, making it one of the most promising materials toward commercialization. [8][9][10][11][12] In addition, OHP has also shown extraordinary potentials in other areas ranging from light-emitting diodes (LEDs) to photodetectors, nonlinear optical devices, lasers, and X-ray sensors. [13][14][15][16][17][18][19][20] Unfortunately, as a typical light harvesting material with excellent performance, a common but intrinsic blemish of pure OHP at both bulk and the nanoscale is that it can only convert part of the UV-visible light (280-800 nm) in the standard AM1.5G sunlight spectrum (280-2500 nm) into electric signals due to the medium bandgap determined by both the chemical composition and crystal structure. [21][22][23] Thus, near-infrared (NIR) light that possesses ≈52% of the total solar irradiance may generate drastic thermal heating effect that shortens the duration of the relevant devices, while the solar energy conversion efficiency may be further increased if properly utilized...

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Section: Introductionmentioning

confidence: 99%

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Yang

Wang

Tian

et al. 2018

Adv Funct Materials

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“…Hollow structured materials, which have large surface areas and complex inner structures can enhance dye loading, light harvesting efficiency and achieve much higher energy conversion efficiency . The upconverting emission profile of multifunctional Na x GdF y O z :Yb 3+ /Er 3+ /TiO 2 hollow spheres overlapping with the absorption spectra of N719 dyes molecules acted as an extremely broadband antenna system . The overall solar energy trapping efficiency was dramatically enhanced as a result of the light reflection of the composite hollow spheres and the overall broadening of the absorption spectrum.…”

Section: Applications Of Lphssmentioning

confidence: 99%

Lanthanide‐Doped Photoluminescence Hollow Structures: Recent Advances and Applications

Zong

Wang

2019

Small

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Lanthanide‐doped nanomaterials have attracted significant attention for their preeminent properties and widespread applications. Due to the unique characteristic, the lanthanide‐doped photoluminescence materials with hollow structures may provide advantages including enhanced light harvesting, intensified electric field density, improved luminescent property, and larger drug loading capacity. Herein, the synthesis, properties, and applications of lanthanide‐doped photoluminescence hollow structures (LPHSs) are comprehensively reviewed. First, different strategies for the engineered synthesis of LPHSs are described in detail, which contain hard, soft, self‐templating methods and other techniques. Thereafter, the relationship between their structure features and photoluminescence properties is discussed. Then, niche applications including biomedicines, bioimaging, therapy, and energy storage/conversion are focused on and superiorities of LPHSs for these applications are particularly highlighted. Finally, keen insights into the challenges and personal prospects for the future development of the LPHSs are provided.

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“…[18] Theb ilayerstructured photoanode,c omposed of small NPs and large NRs,c an lead to strong light scattering,p rovide as ufficient surface area for dye loading,a nd thus outperform TiO 2 NPsbased DSSCs. [19,20] In addition, the top layer consisting of YYEOF NRs can convert the NIR light into visible light to utilizet he solar spectrum more efficiently.A tt he same time, short distances between the N-719 dye and the top layer TiO 2 /YYEOF can ensure effective electron transfer between them. Figure 1s hows schematic structures of photoanodes based on TiO 2 /YYEOF ( Figure 1a)and pure TiO 2 films (Figure 1b).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Photovoltaic Properties of Dye‐Sensitized Solar Cells Using Y_0.80Yb_0.18Er_0.02OF Nanorods

et al. 2018

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The photoanode plays a critical role in influencing the performance of dye‐sensitized solar cells (DSSCs). In this work, Y0.80Yb0.18Er0.02OF nanorods (YYEOF NRs) are synthetized by a simple hydrothermal method and incorporated into the TiO2 film to form a bi‐layer photoanode consisting of nanoparticles (NPs) on the bottom and nanorods on top. Owing to the improved light collection efficiency and electron transport rate, the resultant YYEOF NRs are advantageous as photoanode dopants for DSSCs. Following assembly into an integrated DSSC, an enhanced photocurrent and power conversion efficiency (PCE) are observed. Benefiting from the p‐type doping effect of the YYEOF NRs, the photovoltage of the DSSCs is elevated. The cell performance can be maximized through optimization of the fraction of YYEOF NRs, and the results demonstrate that a promising PCE of 7.74 % is determined for the DSSC with 5 wt % YYEOF NRs, yielding 32.5 % enhancement in comparison to pristine TiO2 NPs‐based solar cells. This work provides a promising strategy to explore photoanode materials, which will lead to further efficiency improvements for solar cells.

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Dual-functional semiconductor-decorated upconversion hollow spheres for high efficiency dye-sensitized solar cells

Cited by 35 publications

References 37 publications

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Lanthanide‐Doped Photoluminescence Hollow Structures: Recent Advances and Applications

Enhancement of the Photovoltaic Properties of Dye‐Sensitized Solar Cells Using Y_0.80Yb_0.18Er_0.02OF Nanorods

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Dual-functional semiconductor-decorated upconversion hollow spheres for high efficiency dye-sensitized solar cells

Cited by 35 publications

References 37 publications

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Solution‐Processable Near‐Infrared–Responsive Composite of Perovskite Nanowires and Photon‐Upconversion Nanoparticles

Lanthanide‐Doped Photoluminescence Hollow Structures: Recent Advances and Applications

Enhancement of the Photovoltaic Properties of Dye‐Sensitized Solar Cells Using Y0.80Yb0.18Er0.02OF Nanorods

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Enhancement of the Photovoltaic Properties of Dye‐Sensitized Solar Cells Using Y_0.80Yb_0.18Er_0.02OF Nanorods