Study of thin film oxidation kinetics using a combination of simulations and advanced characterization (Conference Presentation)

We present some advanced characterization techniques developed to investigate on the opto-electronic properties of thin film semiconductors and apply them to perovskite layers. These techniques are the steady state photocarrier grating (SSPG) and the Fourier transform photocurrent spectroscopy (FTPS). The SSPG was developed to study the ambipolar diffusion length of carriers and the FTPS was imagined to measure the variations of the below gap absorption coefficient with the light energy, giving information on the defect densities of the gap responsible for this absorption. The potentialities of these techniques are first detailed and then exemplified by their application to thin film perovskites. To study their stability, these films were exposed to different environments, air or vacuum, and in their as-deposited state or after light-soaking with heavy light. We find that the diffusion length and density of states are quite stable, even after light-soaking, and suggest that the degradation of devices exposed to 1 sun mainly comes from the evolution of the contacts instead of the perovkite itself.

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Contribution of ion beam analysis to study the mechanisms of YBaCuO thin film growth and their oxidation kinetics

10.1117/12.241784 ◽

1996 ◽

Author(s):

Julius Siejka ◽

J. Garcia-Lopez

Keyword(s):

Thin Film ◽

Oxidation Kinetics ◽

Film Growth ◽

Ion Beam ◽

Thin Film Growth ◽

Ion Beam Analysis ◽

Beam Analysis

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Effect of Heating Single Crystal Copper in H2 and N2 on Thin-Film Oxidation Kinetics

Journal of The Electrochemical Society ◽

10.1149/1.2426702 ◽

1967 ◽

Vol 114 (7) ◽

pp. 669

Author(s):

W. W. Bradley ◽

H. H. Uhlig

Keyword(s):

Thin Film ◽

Single Crystal ◽

Oxidation Kinetics ◽

Single Crystal Copper

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Optimization of charge transport in a Co–Pi modified hematite thin film produced by scalable electron beam evaporation for photoelectrochemical water oxidation

Journal of Materials Chemistry A ◽

10.1039/c6ta09331k ◽

2017 ◽

Vol 5 (7) ◽

pp. 3412-3424 ◽

Cited By ~ 33

Author(s):

Behrooz Eftekharinia ◽

Ahmad Moshaii ◽

Ali Dabirian ◽

Nader Sobhkhiz Vayghan

Keyword(s):

Thin Film ◽

Electron Beam ◽

Charge Transport ◽

Water Oxidation ◽

Oxidation Kinetics ◽

Electron Beam Evaporation ◽

Photoelectrochemical Water Oxidation

The Co–Pi cocatalyst improves the PEC performance of a hematite film by accelerating the H2O oxidation kinetics and suppressing the charge recombinations.

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