Novel ultrathin LiF interlayers for efficient light harvesting in thin-film Si tandem solar cells

Yang, Ji-Hwan; Myong, Seung Yeop; Lim, Koeng Su

doi:10.1016/j.solener.2015.01.034

Cited by 3 publications

(2 citation statements)

References 50 publications

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“…One of the most significant drawbacks of Si-based solar cells is the low efficiency of power generation due to the limited range of high spectral susceptibility of crystalline silicon to sunlight. There are various options to increase the efficiency [2][3][4][5][6][7][8], including additional layers based on up-conversion (UC) [6,7] and down-conversion [8] luminophores. These methods result in energy transfer from non-sensitive regions of the spectrum to crystalline silicon photosensitive range.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and downconversion luminescence of Ba4Y3F17:Yb:Pr solid solutions for photonics

Kuznetsov¹,

Низамутдинов²,

Mayakova³

et al. 2019

Nanosystems: Phys. Chem. Math.

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Single-phase powders of Ba 4 Y 3 F 17 :Yb:Pr solid solutions with an average agglomerate size of 400 nm were synthesized by co-precipitation from aqueous solutions. It was shown that the down-conversion mechanism in the investigated samples was quantum cutting, with one photon absorbed by Pr 3+ ions resulting in two photons emitted by Yb 3+ ions. At first, overall the external quantum yield of down-conversion luminescence measured appeared to be relatively high, with a maximum value of 2.9 % for the Ba 4 Y 3 F 17 :Pr(0.1 %):Yb(10 %) sample. It makes this compound promising for Si-based solar cells efficiency enhancement.

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Section: Introductionmentioning

confidence: 99%

Synthesis and downconversion luminescence of Ba4Y3F17:Yb:Pr solid solutions for photonics

Kuznetsov¹,

Низамутдинов²,

Mayakova³

et al. 2019

Nanosystems: Phys. Chem. Math.

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“…Advantages of these panels are the availability of raw materials the case of manufacturing, and non-toxicity. One of the major drawbacks is a low efficiency [4,5] due to a limited spectral range of photoresponse, which is located mostly in the near-infrared spectral range with a maximum in the 1 µm region [2]. In the green and red regions of the visible spectrum, crystalline silicon is also photosensitive, but to a lesser extent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and quantum yield investigations of the Sr(1-x-y)Pr(x)Yb(y)F(2+x+y) luminophores for photonics

Kuznetsov¹,

Proydakova²,

Морозов³

et al. 2018

Nanosystems: Phys. Chem. Math.

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Single-phase praseodymium-and ytterbium-doped strontium fluoride solid solutions were prepared by co-precipitation from aqueous nitrate solutions followed by annealing at 600 • C. Based on EDX analysis, the content of rare-earth elements in solid phase is slightly higher rather than in initial aqueous solution. All the characteristic praseodymium and ytterbium luminescent bands were present. The most intense luminescence in 800-1100 nm range was registered in SrF 2 :Pr (0.1 mol.%):Yb (10.0 mol.%) solid solution. Using the integrating sphere, the values of the quantum yield were estimated. The maximum quantum yield was 1.1 % for Sr 0.9495 Pr 0.0005 Yb 0.05 F 2.0505 solid solution.

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Ultra-thin LiF Layer As The Electron Collector For a-Si:H Based Photovoltaic Cell

et al. 2017

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An ultra-thin LiF layer in conjunction with an Al layer is employed as the electron collector for the a-Si:H based single-junction thin film photovoltaic cell. The cell has the structure of boron doped μ-SiOx (hole collector) - intrinsic a-Si:H (photoactive layer) - LiF / Al (electron collector and back electrode). The substrate used is U type Asahi glass, which is also acting as the transparent front electrode. For the cell with the 1.5 nm thick LiF layer, annealed at 120°C, the open current voltage (VOC) of 0.936 V, the short current density (JSC) of 13.598 mA/cm2, and the fill factor (FF) of 0.690 are achieved. The JSC and VOC values are comparable to the values measured for the a-Si:H based p-i-n reference cell, but the FF value is found to be lower, which is attributed to the losses due to recombination at the intrinsic a-Si:H / LiF / Al junction. The current versus voltage measurements are carried out under the standard test conditions. The JSC values are corrected according to the external quantum efficiency measurements of the cells in the AM1.5 spectrum region between 270 nm and 800 nm.

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Novel ultrathin LiF interlayers for efficient light harvesting in thin-film Si tandem solar cells

Cited by 3 publications

References 50 publications

Synthesis and downconversion luminescence of Ba4Y3F17:Yb:Pr solid solutions for photonics

Synthesis and downconversion luminescence of Ba4Y3F17:Yb:Pr solid solutions for photonics

Synthesis and quantum yield investigations of the Sr(1-x-y)Pr(x)Yb(y)F(2+x+y) luminophores for photonics

Ultra-thin LiF Layer As The Electron Collector For a-Si:H Based Photovoltaic Cell

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