Laser-SQUID microscope for noncontact evaluation of solar cell

Nakatani, Y.; Hayashi, T.; Itozaki, Hideo

doi:10.1016/j.physc.2011.05.171

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…11b shows a light-induced current map along with schematics of the device and an optical photograph of the device. Nakatani and co-workers have recently demonstrated an elegant modification of the LBIC technique, 193,207 where the photocurrent of the solar cell is detected using a SQUID magnetometer (Fig. 11c).…”

Section: Optical Techniquesmentioning

confidence: 99%

Morphology characterization in organic and hybrid solar cells

Chen

Nikiforov

Darling

2012

Energy Environ. Sci.

393

430

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Organic and hybrid organic-inorganic photovoltaics are among the most promising options for lowcost and highly scalable renewable energy. In order to fully realize the potential of these technologies, power conversion efficiencies and stability will both have to be improved beyond the current state-ofthe-art. The morphology of the active layer is of paramount importance in the photon to electron conversion process in organic and hybrid solar cells, with all length scales, from molecular ordering to intradevice composition variability, playing key roles. Given the central influence of morphology, characterizing the structure of these surprisingly complex material systems at multiple length scales is one of the grand challenges in the field. This review addresses the techniques, some of which have only recently been applied to organic and hybrid photovoltaics, available to scientists and engineers working to understand-and ultimately improve-the operation of these fascinating devices.

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Section: Optical Techniquesmentioning

confidence: 99%

Morphology characterization in organic and hybrid solar cells

Chen

Nikiforov

Darling

2012

Energy Environ. Sci.

393

430

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“…1, because the detected magnetic field is sensitive to the vertical component of the magnetic field. In our previous work 3) , we reported that the magnetic images of a solar cell taken by the laser-SQUID microscope were similar to the current images taken by laser beam induced current imaging (LBIC) technique, which is widely used for solar cell evaluations [4][5][6] . Those images showed the fine contrast changes corresponding to the defects.…”

Section: Introductionmentioning

confidence: 69%

“…We have developed a laser-superconducting quantum interference device microscope (a laser-SQUID microscope), in which a scanning SQUID probe microscope is combined with a laser excitation system [1][2][3] . The magnetic field can be induced by the photocurrent from the laser spot on a semiconducting sample excited by the laser.…”

Section: Introductionmentioning

confidence: 99%

Optically induced magnetic field of polycrystalline solar cell

et al. 2013

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A laser-SQUID microscope can measure the local magnetic field induced by laser excitation. We obtained four magnetic images over a polycrystalline Si solar cell sample with a needle probe, playing a role as a flux guide from the sample surface to the SQUID, symmetrically shifted in four directions around the laser spot. Then, we converted the photocurrent density image showing the constant background contrast from the measured four magnetic images, although the magnetic images had the gradually inclined contrast due to the top electrode influence. The fine contrast changes corresponding to the defects were clearly observed in the converted current image.

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