Influence of process parameters on band gap of Al-doped ZnO film

Huang, Diqiu; Zeng, Xiangbin; Zheng, Yuanzhou; Wang, Xiaojin; Yang, Yanyan

doi:10.1007/s12200-012-0302-x

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…Currently there are varying conclusions on the influence of aluminum concentration on the band gap. Much of this variation is seemingly due to differences in film preparation, ,− but further investigations are required to understand these differences. Optical methods are ideal for determining bulk film properties but are insensitive to the surface properties and only able to determine the band gap, not the position of the valence or conduction bands (CBs).…”

Section: Introductionmentioning

confidence: 99%

Surface and Near Surface Area Density of States for Magnetron-Sputtered ZnO and Al-ZnO: A MIES, UPS, and VBXPS Study Investigating Ultrahigh Vacuum Sputter Cleaning and UV Oxygen Plasma

et al. 2016

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The impact of nonsolvent-based cleaning methods on zinc oxide and aluminum-doped zinc oxide was investigated across a range of doping concentrations up to 25% aluminum. A combination of electron spectroscopic techniques was utilized in order to characterize the electronic states present on the surface and to discern the differences between the near surface area and outermost layer valence band states. Understanding the differences between the near surface area and outermost layer of an interface is crucial when optimizing devices for charge transfer. The techniques were valence band X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and metastable-induced electron spectroscopy. The band gap was also measured via ultraviolet/visible spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Surface and Near Surface Area Density of States for Magnetron-Sputtered ZnO and Al-ZnO: A MIES, UPS, and VBXPS Study Investigating Ultrahigh Vacuum Sputter Cleaning and UV Oxygen Plasma

et al. 2016

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“…10,11 Al-doped ZnO (AZO) films have got potential applications in solar cells, solid-state display devices, optical coatings, heaters, defrosters, chemical sensors, etc. 12,13 AZO is attractive for photovoltaic applications due to ZnO conductivity when doped with aluminium and transparency to the visible range of sunlight, i.e., minimized optical and electrical loss. 14 Several methods on the synthesis of various shaped ZnO nanostructured thin films are developed; for example, ZnO microrods were obtained by using spray pyrolysis, ZnO nanocomposite films deposited onto glass substrates were obtained by magnetron sputtering in different atmospheres, ZnO microrods were deposited by the hydrothermal method, ZnO nanofibres were deposited by electrospinning technique, and so on.…”

Section: Introductionmentioning

confidence: 99%

Dependence of ZnO-based dye-sensitized solar cell characteristics on the layer deposition method

et al. 2015

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The selection of a proper method for the semiconductor layer deposition is an important requirement towards a high efficiency for dye-sensitized solar cells (DSSCs). We compared three techniques for deposition of the semiconductor thin layer in ZnO-based DSSCs, in order to determine the dependence between the deposition method, the ZnO film properties and finally the DSSCs characteristics. For this purpose, we varied the method used for deposition of the semiconductor film and we replaced ZnO with Al-doped ZnO. The nanostructured films morphology was analysed by transmission electron microscopy, high-resolution transmission electron microscopy and selected area electron diffraction. The optical properties were examined by UV-visible spectroscopy and the bandgap energies were calculated using the Tauc equation. The higher fill factor value was registered for DSSCs based on the ZnO film obtained by electrochemical method, but the higher efficiency was registered for doctorblading method.

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Semiconductor to metal transition in degenerate ZnO: Al films and the impact on its carrier scattering mechanisms and bandgap for OLED applications

Jha

Santos-Ortiz

et al. 2014

J Mater Sci: Mater Electron

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Influence of process parameters on band gap of Al-doped ZnO film

Cited by 6 publications

References 27 publications

Surface and Near Surface Area Density of States for Magnetron-Sputtered ZnO and Al-ZnO: A MIES, UPS, and VBXPS Study Investigating Ultrahigh Vacuum Sputter Cleaning and UV Oxygen Plasma

Surface and Near Surface Area Density of States for Magnetron-Sputtered ZnO and Al-ZnO: A MIES, UPS, and VBXPS Study Investigating Ultrahigh Vacuum Sputter Cleaning and UV Oxygen Plasma

Dependence of ZnO-based dye-sensitized solar cell characteristics on the layer deposition method

Semiconductor to metal transition in degenerate ZnO: Al films and the impact on its carrier scattering mechanisms and bandgap for OLED applications

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