Presentation 2016-12-20
Observation of Each Subcell in a Tandem Solar Cell Using Wavelength Tunable Laser Terahertz Emission Microscope
Shota Hamauchi, Iwao Kawayama, Yuji Sakai, Toshihito Umegaki, Akira Ito, Hidetoshi Nakanishi, Hironaru Murakami, Charles Schmuttenmaer, Masayoshi Tonouchi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) THz waves are generated from semiconductor materials and devices excited by femtosecond laser pulses, which reflect internal electric fields, crystal grains and defects in the materials and devices. We have developed an inspection method of solar cells nondestructively using laser terahertz emission microscope (LTEM) that detects and visualizes amplitudes of THz emissions. In this report, we tried to measure THz emissions form each sub cell of a triple junction (TJ) solar cell by changing the wavelengths of excitation laser pulses and demonstrated that THz waveforms and images reflect the properties of each sub cell in the TJ solar cell.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Terahertz / Solar cell / Imaging
Paper # ED2016-90
Date of Issue 2016-12-12 (ED)

Conference Information
Committee ED
Conference Date 2016/12/19(2days)
Place (in Japanese) (See Japanese page)
Place (in English) RIEC, Tohoku Univ
Topics (in Japanese) (See Japanese page)
Topics (in English) Millimeter-wave, terahertz-wave devices and systems
Chair Koichi Maezawa(Univ. of Toyama)
Vice Chair Kunio Tsuda(Toshiba)
Secretary Kunio Tsuda(JAIST)
Assistant Masataka Higashiwaki(NICT) / Toshiyuki Oishi(Saga Univ.)

Paper Information
Registration To Technical Committee on Electron Devices
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Observation of Each Subcell in a Tandem Solar Cell Using Wavelength Tunable Laser Terahertz Emission Microscope
Sub Title (in English)
Keyword(1) Terahertz
Keyword(2) Solar cell
Keyword(3) Imaging
1st Author's Name Shota Hamauchi
1st Author's Affiliation Osaka University(Osaka Univ.)
2nd Author's Name Iwao Kawayama
2nd Author's Affiliation Osaka University(Osaka Univ.)
3rd Author's Name Yuji Sakai
3rd Author's Affiliation Osaka University(Osaka Univ.)
4th Author's Name Toshihito Umegaki
4th Author's Affiliation Osaka University(Osaka Univ.)
5th Author's Name Akira Ito
5th Author's Affiliation SCREEN Holdings Co., Ltd.(SCREEN)
6th Author's Name Hidetoshi Nakanishi
6th Author's Affiliation SCREEN Holdings Co., Ltd.(SCREEN)
7th Author's Name Hironaru Murakami
7th Author's Affiliation Osaka University(Osaka Univ.)
8th Author's Name Charles Schmuttenmaer
8th Author's Affiliation Yale University/Osaka University(Yale Univ./Osaka Univ.)
9th Author's Name Masayoshi Tonouchi
9th Author's Affiliation Osaka University(Osaka Univ.)
Date 2016-12-20
Paper # ED2016-90
Volume (vol) vol.116
Number (no) ED-375
Page pp.pp.55-60(ED),
#Pages 6
Date of Issue 2016-12-12 (ED)