scholarly journals Electrochemical Reduction of Undoped and Cobalt-Doped BiFeO3 Induced by Water Exposure: Quantitative Determination of Reduction Potentials and Defect Energy Levels Using Photoelectron Spectroscopy

2019 ◽  
Vol 10 (22) ◽  
pp. 7071-7076 ◽  
Author(s):  
Nicole S. Bein ◽  
Pamela Machado ◽  
Mariona Coll ◽  
Feng Chen ◽  
Maja Makarovic ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Electrochemical Reduction ◽  
Photoelectron Spectroscopy ◽  
Energy Levels ◽  
Defect Energy ◽  
Water Exposure ◽  
Reduction Potentials

Quantitative Determination of Ligand Densities on Nanomaterials by X-ray Photoelectron Spectroscopy

2015 ◽  
Vol 7 (3) ◽  
pp. 1720-1725 ◽  
Author(s):  
Marco D. Torelli ◽  
Rebecca A. Putans ◽  
Yizheng Tan ◽  
Samuel E. Lohse ◽  
Catherine J. Murphy ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Photoelectron Spectroscopy ◽  
X Ray

Determination of Nanomaterial Energy Levels for Organic Photovoltaics by Cyclic Voltammetry

2007 ◽  
Vol 1031 ◽  
Author(s):  
Robert Ann DiLeo ◽  
Annick Anctil ◽  
Brian Landi ◽  
Cory Cress ◽  
Ryne P Raffaelle
Keyword(s):  
Cyclic Voltammetry ◽  
Polymer Composites ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Reduction Potentials ◽  
Fundamental Understanding ◽  
Cv Measurements ◽  
The Individual ◽  
The Relationship

AbstractA wide variety of nanomaterials and associated nanomaterial/polymer composites are being developed in an effort to produce higher efficiency organic solar cells. This development requires a fundamental understanding of the energy levels for the individual materials, and their composites, to enable device designs which posess appropriate energy level matching. Cyclic voltammetry (CV) allows for the determination of the band gaps (Eg) and energy levels of these various nanomaterials and composites by measuring their oxidation and reduction potentials. These potentials correspond to a given material's ionization potential (IP) and electron affinity (EA), respectively. The results for the EA, IP, and Eg have been determined by CV for derivatized fullerenes and CdSe quantum dots (QD), measured in isolation, and in conjugated polymer composites with MEH-PPV. In addition, CV measurements conducted under dark and illuminated conditions were used to investigate the relationship between energy levels within the composites.

scholarly journals Quantitative determination of elemental diffusion from deeply buried layers by photoelectron spectroscopy

2018 ◽  
Vol 124 (8) ◽  
pp. 085115 ◽  
Author(s):  
C. Zborowski ◽  
O. Renault ◽  
A. Torres ◽  
C. Guedj ◽  
Y. Yamashita ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Photoelectron Spectroscopy ◽  
Elemental Diffusion ◽  
Buried Layers
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