Viability of using near infrared PbS quantum dots as active materials in luminescent solar concentrators

Shcherbatyuk, Georgiy; Inman, Richard; Wang, C.; Winston, R.; Ghosh, Sayantani

doi:10.1063/1.3422485

Cited by 138 publications

(117 citation statements)

References 20 publications

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“…NCs can provide excellent PL QY with sufficient long term stabilities. For example PLQE of 85% has been reported for core-shell NCs [49], and PL QY of 70% for the transparent NCs/polymer composites so far [32]. …”

Section: Light Conversion Layers In Concentrator Solar Cellsmentioning

confidence: 97%

Polymer-Nanocrystal Hybrid Materials for Light Conversion Applications

Yuan

Krüger

2011

Polymers

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Section: Light Conversion Layers In Concentrator Solar Cellsmentioning

confidence: 97%

Polymer-Nanocrystal Hybrid Materials for Light Conversion Applications

Yuan

Krüger

2011

Polymers

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“…Recently, CQDs with both broadband absorption and high photoluminescence quantum efficiency have been investigated as a promising candidates for use in LCS. The main obstacle for developing CQDs as LSC materials is their relatively small Stokes shifts (spectral separation between ab-sorption and emission bandwidths), which are associated with large reabsorption probability [264].…”

Section: Luminescent Solar Concentratorsmentioning

confidence: 99%

Advancing colloidal quantum dot photovoltaic technology

et al. 2016

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Colloidal quantum dots (CQDs) are attractive materials for solar cells due to their low cost, ease of fabrication and spectral tunability. Progress in CQD photovoltaic technology over the past decade has resulted in power conversion efficiencies approaching 10%. In this review, we give an overview of this progress, and discuss limiting mechanisms and paths for future improvement in CQD solar cell technology. We briefly summarize nanoparticle synthesis and film processing methods and evaluate the optoelectronic properties of CQD films, including the crucial role that surface ligands play in materials performance. We give an overview of device architecture engineering in CQD solar cells. The compromise between carrier extraction and photon absorption in CQD photovoltaics is analyzed along with different strategies for overcoming this trade-off. We then focus on recent advances in absorption enhancement through innovative device design and the use of nanophotonics. Several light-trapping schemes, which have resulted in large increases in cell photocurrent, are described in detail. In particular, integrating plasmonic elements into CQD devices has emerged as a promising approach to enhance photon absorption through both near-field coupling and far-field scattering effects. We also discuss strategies for overcoming the single junction efficiency limits in CQD solar cells, including tandem architectures, multiple exciton generation and hybrid materials schemes. Finally, we offer a perspective on future directions for the field and the most promising paths for achieving higher device efficiencies.

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“…LSCs are basically plastic or glass waveguides containing or topped with a thin layer of fluorescent materials, like organic dyes [4][5][6] or quantum dots [7][8][9][10]. These luminophores absorb incident sunlight and re-emit these photons at longer wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Increased efficiency of luminescent solar concentrators after application of organic wavelength selective mirrors

Verbunt¹,

Tsoi²,

Debije³

et al. 2012

Opt. Express

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Organic wavelength-selective mirrors are used to reduce the loss of emitted photons through the surface of a luminescent solar concentrator (LSC). A theoretical calculation suggests that application of a 400 nm broad reflector on top of an LSC containing BASF Lumogen Red 305 as a luminophore can reflect 91% of all surface emitted photons back into the device. Used in this way, such broad reflectors could increase the edgeemission efficiency of the LSC by up to 66%. Similarly, 175 nm broad reflectors could increase efficiency up to 45%. Measurements demonstrate more limited effectiveness and dependency on the peak absorbance of the LSC. At higher absorbance, the increased number of internal re-absorption events reduces the effectiveness of the reflectors, leading to a maximum increase in LSC efficiency of ~5% for an LSC with a peak absorbance of 1. Reducing re-absorption by reducing dye concentration or the coverage of the luminophore coating results in an increase in LSC efficiency of up to 30% and 27%, respectively.

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Viability of using near infrared PbS quantum dots as active materials in luminescent solar concentrators

Cited by 138 publications

References 20 publications

Polymer-Nanocrystal Hybrid Materials for Light Conversion Applications

Polymer-Nanocrystal Hybrid Materials for Light Conversion Applications

Advancing colloidal quantum dot photovoltaic technology

Increased efficiency of luminescent solar concentrators after application of organic wavelength selective mirrors

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