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Takeaki Sakurai

University of Tsukuba

Tsukuba University , Ibaraki Ken

Tsukuba, Ibaraki 305-8573, 3050006

Japan

  • University of Tsukuba

SCHOLARLY PAPERS

2

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91

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0

Scholarly Papers (2)

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1.

Influence of acceptor-type trap states on 2DEG density in β-(Al0.15Ga0.85)2O3/Ga2O3 HFET

Number of pages: 24 Posted: 13 Sep 2025
Yun Jia, Fenfen Fenda Florena, Aboulaye Traoré, Ryo Morita, Hironori Okumura and Takeaki Sakurai
affiliation not provided to SSRN, Novel Crystal Technology, Université Sorbonne Paris Nord, affiliation not provided to SSRN, affiliation not provided to SSRN and University of Tsukuba
Downloads 50 (1,074,648)

Abstract:

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β-(AlxGa1-x)2O3, 2DEG density, DLTS, Trap states

2.

Effects of Quasi-Fermi Level Splitting and Band Tail States on Open Circuit Voltage Towards High-Efficiency Cu(In,Ga)Se2 Solar Cells

Number of pages: 13 Posted: 22 Dec 2023
Cheuk Kai Gary Kwok, Hamidou Tangara, Naoki Masuko, Roland Scheer, Shogo Ishizuka, Muhammad Monirul Islam and Takeaki Sakurai
City University of Hong Kong (CityU), University of Tsukuba, University of Tsukuba, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Tsukuba and University of Tsukuba
Downloads 41 (1,183,237)

Abstract:

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Open circuit voltage, Cu(In, Ga)Se2, quasi-Fermi level splitting, Urbach tail