Enhancing the power conversion efficiency of solar cells employing down-shifting silicon quantum dots

Lopez-Delgado, R.; Higuera-Valenzuela, H. J.; Zazueta-Raynaud, A.; Ramos, Arturo Valencia; Pelayo, J. E.; Berman, D.; Álvarez-Ramos, M. E.; Ayón, Arturo A.

doi:10.1088/1742-6596/773/1/012087

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…The silicon QDs' solutions were synthesized at room temperature [10] in a water-based dispersion, following the method reported by Wang et al [11]. The process was observed to be relatively straightforward and produced consistent results.…”

Section: Synthesis Of Si Quantum Dotsmentioning

confidence: 99%

Synthesis of Si and CdTe quantum dots and their combined use as down-shifting photoluminescent centers in Si solar cells

Guerrero-Gonzalez

Orona

Saucedo-Flores

et al. 2019

Mater Renew Sustain Energy

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This paper describes the synthesis and characterization of Si and CdTe quantum dots (QDs) and their use, either on their own or combined, as photoluminescent (PL) down-shifting nanostructured coatings aimed to enhance the photovoltaic efficiency of polycrystalline silicon solar cells. To this end, the front face of a set of silicon cells was coated with different volume ratios of the above-mentioned QDs, or some of its mixtures, dispersed in PMMA layers. Previously, the absorption and the PL (exc = 380 nm) response of the dispersions of the QDs were measured. It was observed that the PL response of the mixtures was strongly affected in location, spread, and intensity of the emission peak according to the volume ratio involved. As compared to the unmixed CdTe samples, a notorious red-shift of the main peak location was obtained for a couple of mixed QDs' dispersions, which was one of the project objectives given that Si solar cells respond better to photons with wavelengths in the 650-700 nm range. This effect was confirmed in a set of polycrystalline Si solar cells covered with and without nanostructured PMMA/QDs layers tested under AM 1.5G solar simulator conditions. It was found that the use of the proposed mixtures of QDs gave an increase of 1.53% in solar cell power conversion efficiency.

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Section: Synthesis Of Si Quantum Dotsmentioning

confidence: 99%

Synthesis of Si and CdTe quantum dots and their combined use as down-shifting photoluminescent centers in Si solar cells

Guerrero-Gonzalez

Orona

Saucedo-Flores

et al. 2019

Mater Renew Sustain Energy

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“…Although, compound semiconductors have been researched as potential top solar cell absorber material; high fabrication temperatures, the lattice mismatch between silicon and compound semiconductors, and the fabrication cost are the biggest hindrances to its application. In the last decade; the perovskite material system has attracted a lot of research either for single-junction solar cells or as material for perovskite/silicon tandem solar cells [18][19][20][21][22][23][24][25]. This has shown high energy conversion efficiencies, with open-circuit voltages close to the theoretical limit of silicon material [26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Solar Solutions for the Future

Mulati¹,

Soita²

2022

Recent Advances in Multifunctional Perovskite Materials

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The energy conversion efficiency and limits of perovskite/silicon solar cells are investigated. The influence of a layered approach in preventing lead leakage in perovskite solar cells is discussed. The highest efficiency perovskite tandem to date was achieved by pairing a perovskite top cell with a Si bottom cell in a four-terminal configuration, yielding 26.4%. Perovskite cell integrated with crystalline silicon cell to form a tandem solar device has shown high performance above the single pn-junction silicon devices. Although sufficient work and different strategies have been applied to increase efficiency in these devices, the tandem application has achieved efficiency of 29% in a short period.

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“…Amorphous silicon exhibits an ideal bandgap, but the tailstates of the material prevent the realization of solar cells with high open-circuit voltages, which is a prerequisite for the realization of tandem solar cells with high energy conversion efficiencies [13][14][15][16][17]. Silicon oxide/crystalline siliconbased quantum dot and quantum well have been investigated as potential material of the top solar cell [18][19][20][21]. However, solar cells with high energy conversion efficiencies have not been realized using silicon-based quantum dots or quantum wells.…”

Section: Introductionmentioning

confidence: 99%

Perovskite/Silicon Tandem Solar Cells: From Detailed Balance Limit Calculations to Photon Management

et al. 2019

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• Thermodynamic and detailed balance calculations are provided to derive guideline for the optimization of perovskite solar cells. • The influence of photon management on the energy conversion efficiency of perovskite solar cells is discussed. • An optimized solar cell design is proposed, which allows for realizing perovskite/silicon tandem solar cell with an energy conversion efficiency exceeding 32%.

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Enhancing the power conversion efficiency of solar cells employing down-shifting silicon quantum dots

Cited by 5 publications

References 10 publications

Synthesis of Si and CdTe quantum dots and their combined use as down-shifting photoluminescent centers in Si solar cells

Synthesis of Si and CdTe quantum dots and their combined use as down-shifting photoluminescent centers in Si solar cells

Solar Solutions for the Future

Perovskite/Silicon Tandem Solar Cells: From Detailed Balance Limit Calculations to Photon Management

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