TY - JOUR
T1 - Differential conductivity mapping of solar panels using a high-T C superconductor SQUID
AU - Kiwa, T.
AU - Maeda, S.
AU - Miyake, K.
AU - Kataoka, N.
AU - Tsukamoto, A.
AU - Adachi, S.
AU - Tanabe, K.
AU - Kandori, A.
AU - Tsukada, K.
N1 - Funding Information:
This work is supported by the Strategic Promotion of Innovative R&D’ program funded by the Japan Science and Technology Agency (JST).
PY - 2011/11
Y1 - 2011/11
N2 - To visualise the distribution of the electric property of solar cells, we developed a differential conductivity mapping system using high-TC (HTS-) superconductor SQUID with a normal conducting pick-up coil. The bias ac voltage with an offset voltage was applied to a solar panel made from amorphous silicon, and the normal component of the generated magnetic field was lock-in-detected. Thus the measured signal was converted to dB/dV properties, which are inverse-proportional to the differential resistivity, as the function of the offset voltage. By scanning the pick-up coil across the panel surface, we obtained the distribution of dB/dV properties across the solar panel was obtained by scanning the pick-up coil across the panel surface. The distribution of dB/dV on the panel differed between when the light source was on and when it was off. This result suggests that the proposed system is a potential tool for diagnosing the electric properties of solar cells.
AB - To visualise the distribution of the electric property of solar cells, we developed a differential conductivity mapping system using high-TC (HTS-) superconductor SQUID with a normal conducting pick-up coil. The bias ac voltage with an offset voltage was applied to a solar panel made from amorphous silicon, and the normal component of the generated magnetic field was lock-in-detected. Thus the measured signal was converted to dB/dV properties, which are inverse-proportional to the differential resistivity, as the function of the offset voltage. By scanning the pick-up coil across the panel surface, we obtained the distribution of dB/dV properties across the solar panel was obtained by scanning the pick-up coil across the panel surface. The distribution of dB/dV on the panel differed between when the light source was on and when it was off. This result suggests that the proposed system is a potential tool for diagnosing the electric properties of solar cells.
KW - Differential resistivity
KW - HTS SQUID
KW - Non-destructive test
KW - Solar panel
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U2 - 10.1016/j.physc.2011.05.168
DO - 10.1016/j.physc.2011.05.168
M3 - Article
AN - SCOPUS:80055020002
VL - 471
SP - 1238
EP - 1241
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 21-22
ER -