P‐62: Grating‐Based Optical Film for High‐Efficiency Backlights

Tokutaro, Komatsu; Yasuhiko, Awano; Mariko, Toyama; Yoshida, Akihiro; Shingo, Kobayashi

doi:10.1889/1.2785323

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Figure 8 shows the different degree of photonic crystal film. From references [11], when αF of photonic crystal film was small, easy to focus on the point of light lead to the effect of scattering can't achieve. Therefore, the haze of 90∘V-type photonic crystal film high than 45∘composite.…”

Section: Resultsmentioning

confidence: 99%

Nanoimprint Photonic Crystal Film Enhanced Light-Trapping in a-Si Thin Film Solar Cells

Chu

Juang

Lin

et al. 2011

AMM

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We utilize photonic crystals to enhanced lighttrapping in a-Si:H thin film solar cells. The photonic crystals effectively increase Haze ratio of glass and decrease reflectance of a-Si:H solar cells. Therefore, increase the photon path length to obtain maximum absorption of the absorber layer. The photonic crystals can effective in harvesting weakly absorbing photons with energies just above the band edge. We were spin coated UV glue on the glass, and then nanoimprint of photonic crystals pattern. Finally, used UV lamp was curing of UV glue on the glass. When the 45∘composite photonic crystals structures, the haze was increase to 87.9 %, resulting the short circuit current density and efficiency increasing to 13.96 mA/cm2 and 7.39 %, respectively. Because 45∘composite photonic crystals easy to focus on the point of light lead to the effect of scattering can’t achieve. So, we designs 90∘V-shaped photonic crystals structures to increase scattering. When the 90∘V-shaped photonic crystals structures, the Haze was increase to 93.9 %. Therefore, the short circuit current density and Efficiency increasing to 15.62 mA/cm2 and 8.09 %, respectively. We observed ~35 % enhancement of the short-circuit current density and ~31 % enhancement of the conversion efficiency.

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Section: Resultsmentioning

confidence: 99%

Nanoimprint Photonic Crystal Film Enhanced Light-Trapping in a-Si Thin Film Solar Cells

Chu

Juang

Lin

et al. 2011

AMM

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P‐118: Optical Structure of Thin‐Direct‐Type Backlight for TFT‐LCD TV Module

Chen

Huang

Jin

2008

Symp Digest of Tech Papers

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With the development of TFT‐LCD TV display devices, high performance and thinness feature become the mainstream. It is a great challenge to make direct backlight of LCD TV module with CCFL light source thinner in mechanical and optical design. In this paper, we adopted a special structure to reduce thickness of direct backlight in display. This structure can decrease the space for CCFL light mixing. And the feasibility is also supported by optical simulations and experiments.

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P‐62: Grating‐Based Optical Film for High‐Efficiency Backlights

Cited by 2 publications

References 4 publications

Nanoimprint Photonic Crystal Film Enhanced Light-Trapping in a-Si Thin Film Solar Cells

Nanoimprint Photonic Crystal Film Enhanced Light-Trapping in a-Si Thin Film Solar Cells

P‐118: Optical Structure of Thin‐Direct‐Type Backlight for TFT‐LCD TV Module

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