2μm thin film c-Si cells on near-Lambertian Al2O3 substrates

Shimokawa, Ryuichi; Takahashi, Tetsuo; Takato, Hidetaka; Ozaki, Atsushi; Takáno, Yukio

doi:10.1016/s0927-0248(00)00146-x

Cited by 14 publications

(5 citation statements)

References 5 publications

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“…The dispersant used in the present first slurry consists primarily of poly(acrylic acid). The binder and plasticizer in the second slurry consist primarily of poly(acrylic acid)19 and polyethylene glycol,20, 22 respectively. There are several reports related to the composition of dispersant, binder, and plasticizer.…”

Section: Discussionmentioning

confidence: 99%

“…Currently, one of the methods proposed for manufacturing flat ceramics with precise control of thickness and consistency is called tape casting 17–19. This method utilizes a specially formulated slurry, which can be cast on a moving carrier surface beneath the knife‐edge of a blade called a doctor blade.…”

Section: Introductionmentioning

confidence: 99%

“…Applications of the tape‐casting technique are found in industry, including microelectronics, photovoltaic solar applications, laminated composites, and rapid prototyping. Tanimoto18 and Shimokawa et al19 reported the use of the tape‐casting technique to fabricate ceramic sheets composed of Al 2 O 3 . The fracture toughness of the resulting Al 2 O 3 sheet was almost three times greater than that of the original Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

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Tape‐casting technique can prepare β‐TCP sheets with uniform thickness and flexibility

2004

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The objective of this study is to propose a new fabrication technology for bone substitutes. In this study, a tape-casting method was used to prepare flexible beta-tricalcium phosphate (beta-TCP) sheets. A beta-TCP slurry containing a binder and plasticizer was used in a doctor blade system. The beta-TCP sheet obtained by this tape-casting method was highly flexible, enabling twisting and free-form shaping. The beta-TCP sheet was approximately 0.21 mm thick. X-ray diffraction and Fourier transform infrared spectrometry revealed that the structure of the beta-TCP component in the sheet is the same as that of the original beta-TCP powder. Observation by field-emission scanning electron microscopy showed that the beta-TCP sheet had a flat, microgranular surface. During the early stages, the tensile stress-strain curves of the beta-TCP sheet showed a nonlinear behavior until reaching the point of final fracture. This result was derived from the ductile property of the prepared beta-TCP sheet. In conclusion, a flexible beta-TCP sheet was easily prepared using a tape-casting technique. Fabrication using tape casting offers the advantages of enabling the preparation of ceramic sheets with precise thickness and not requiring expensive fabrication facilities.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tape‐casting technique can prepare β‐TCP sheets with uniform thickness and flexibility

2004

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“…For optical confinement, the diffuse-reflection substrate with a Lambertian surface is the most suitable. Hence, we have developed an Al O ceramic substrate with a near-Lambertian surface and this substrate has been applied to the cell ( [3], [7]). Moreover, surface texturing of the silicon layer or texturing of the supporting substrate such as The authors are with Electrotechnical Laboratory, Ibaraki 305-8568, Japan (e-mail: takato@etl.go.jp).…”

Section: Introductionmentioning

confidence: 99%

Optical confinement in thin-film crystalline silicon solar cells by adhesive bonding of ceramic substrate

Takato¹,

Shimokawa²

2000

IEEE Electron Device Lett.

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Thin film (5-m-thick) silicon solar cells by adhesive bonding of a near-Lambertian Al 2 O 3 ceramic substrate have been fabricated, and the electrical and optical performance of the cells have been investigated. This cell structure shows a good optical confinement effect. From quantum efficiency measurements, it is found that a short circuit current that is as high as that of waferbased cells can be obtained by reducing the surface reflectance. Cell and module fabrication processes can be simplified using this technique.

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“…A surface that has a cosine-dependent reflectivity versus a polar angle is called a Lambert one (Kienle & Foschum, 2011), it means its radiant intensity is the same on any given direction, thus a utterly diffuse reflectivity. Substrates of little rounded alumina (Al 2 O 3 ) granules, of approximately 0.5 μm have been used to ensure the almost total reflectivity and diffusivity of the plate (Shimokawa et al, 2001), has been chosen to match the purposes of this research for this reason.…”

Section: Near-lambertian Platementioning

confidence: 99%

Design, construction and tests of a high flux solar simulator.

Canto¹

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2μm thin film c-Si cells on near-Lambertian Al2O3 substrates

Cited by 14 publications

References 5 publications

Tape‐casting technique can prepare β‐TCP sheets with uniform thickness and flexibility

Tape‐casting technique can prepare β‐TCP sheets with uniform thickness and flexibility

Optical confinement in thin-film crystalline silicon solar cells by adhesive bonding of ceramic substrate

Design, construction and tests of a high flux solar simulator.

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