Electrical and optical properties of TCO–Cu2O heterojunction devices

Tanaka, Hideki; Shimakawa, Takahiro; Miyata, Toshihiro; Sato, Hirotoshi; Minami, Tadatsugu

doi:10.1016/j.tsf.2004.06.180

Cited by 83 publications

(47 citation statements)

References 21 publications

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“…Such an ohmic I-V characteristic was also observed in In 2 O 3 -Cu 2 O system with poorphotovoltaic properties [28]. However, we can anticipate that the ohmic contact will function positively in terms of photocatalytic activity as discussed below.…”

Section: I-v Analysismentioning

confidence: 57%

Ohmic Hetero-Junction of n-Type Silicon and Tungsten Trioxide for Visible-Light Sensitive Photocatalyst

Yoshimizu¹,

Hotori²,

Irie³

2017

MSCE

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Visible light-sensitive photocatalyst was developed by combining n-type silicon (n-Si) and tungsten trioxide (WO 3 , n-Si/WO 3 ), yielding an ohmic contact in between. In this system, the ohmic contact acted as an electron-and-hole mediator for the transfer of electrons and holes in the conduction band (CB) of WO 3 and in the valence band (VB) of n-Si, respectively. Utilizing thusconstructed n-Si/WO 3 , the decomposition of 2-propanolto CO 2 via acetone was achieved under visible light irradiation, by the contribution of holes in the VB of WO 3 to decompose 2-propanol and the consumption of electrons in the CB of n-Si to reduce O 2 .

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Section: I-v Analysismentioning

confidence: 57%

Ohmic Hetero-Junction of n-Type Silicon and Tungsten Trioxide for Visible-Light Sensitive Photocatalyst

Yoshimizu¹,

Hotori²,

Irie³

2017

MSCE

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“…Transparent oxide semiconductors (TOS) [1,2] with both n-and p-type of electrical conduction are of great in- * E-mail: michal.mazur@pwr.wroc.pl (Corresponding author) terest for practical realization of transparent electronics, such as: photodiodes, solar cells, touch displays or radiation detectors [3,4]. Typically well known transparent conductive oxides based on SnO 2 and ZnO are n-type.…”

Section: Introductionmentioning

confidence: 99%

Optical and electrical properties of nanocrystalline TiO2:Pd semiconducting oxides

et al. 2011

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Abstract:Electrical and optical properties of TiO 2 :Pd thin films deposited from Ti-Pd mosaic targets sputtered in reactive oxygen plasma have been studied. The properties were investigated for thin films with the Pd amount of 5.5 at. %, 8.4 at. % and 23 at. %. Based on resistivity measurements a drop from 10 3 down to almost 10 −3 Ωcm has been recorded when the Pd amount was varied from 5.5 at. % to 23 at. %, respectively. Moreover, it was shown that doping with different amounts of Pd results in the possibility of obtaining both types of electrical conduction: n-type for the TiO 2 with 5.5 at. % and 8.4 at. % of Pd and ptype for the TiO 2 with 23 at. % of Pd thin films. From optical measurements it has been found that as the Pd amount was increased the transmission through the thin films was reduced and position of the fundamental absorption edge was shifted toward a longer wavelength range of up to 600 nm. The optical band gap was calculated for direct and indirect transitions from optical absorption spectra. Structural properties were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The XRD patterns displayed occurrence of the crystalline, TiO 2 -rutile for lower Pd amounts (5.5 at. %, 8.4 at. %), while the TiO 2 :Pd (23 at. %) thin films displayed XRD-amorphous behaviour. Images obtained from AFM displayed dense, nanocrystalline structure with homogenous distribution of crystallites. Additionally performed secondary ion mass spectroscopy investigation confirmed homogenous distribution of Pd in the whole thickness of the prepared thin films. PACS

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“…With the progress of technology, metal oxides such as Cu 2 O and ZnO have also been considered for fabricating solar cells using traditional p/n junction or Schottky diode structures [6][7][8] as a large amount of theoretical studies have revealed that they potentially have good performances and are suitable for solar cells applications [ 9 -16]. However, practical MO heterojunction solar cells always show much poorer performance than the theoretical prediction.…”

Section: Momentioning

confidence: 99%