Silicon Nanodot Layers for Photovoltaic Application: Size/Density Control and Electrical Properties
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Abstract
Fabrication of Si nanodot single layers under ultrahigh vacuum (UHV) conditions is achieved by decomposition and self-organized growth from thermally deposited non-stoichiometric SiOx (x < 2) precursor layers provided with an ultrathin SiO2 capping layer due to phase separation upon appropriate in situ annealing. The kinetics of the thermal decomposition of the constituting Si suboxides (Sin+, n = 0…4) into Si nanodots and the surrounding SiO2 matrix is analyzed in situ by X-ray photoelectron spectroscopy (XPS) as a function of the annealing temperature. The maximum size and the density of the nanodots are varied by adjusting the stoichiometric coefficient x and the layer thickness. Thus, the electronic nanodot properties and the interlayer transport properties can be controlled. For initial compositions (x ranging from 0.9 to 1.4) and layer thicknesses (3 to 10 nm), phase separation was completed at 850 ℃. The phase separation revealed by XPS is directly correlated with electrical properties as derived from atomic force microscopy measurements detecting surface potentials (KFM) and local conductivity (CS-AFM) across individual nanodots.
©2014 Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Preface
- Clusters: From the Gas Phase to Materials
- The Role of Clustering in the Liquid-Vapor Transition of Mercury
- Far-IR Spectra of Small Neutral Gold Clusters in the Gas Phase
- Infrared Photodissociation Spectroscopy of C2n+1N− Anions with n = 1 – 5
- Probing Phase Transitions with Supersonic Beams – A Joint Experimental and Theoretical Study
- 2s-Excitation and Photoionization of Neon Clusters
- A More Accurate Molar Mass of Silicon via High Resolution MC-ICP-Mass Spectrometry
- Double Cation Formation from the Photo-Fragmentation of the closo-Carboranes
- The Anomalous Fragmentation of Water Clusters at Ultrafast Impacts: An experimental and Theoretical Study
- A New Liquid Droplet Laser Desorption Source Combined with Supersonic Jet Expansion: Application to Phenol and its Water Clusters
- Wavelength Dependence of Water Microdroplet Shattering with Dual IR Lasers and Dye Sensitization
- The Impact of Non-Electrolyte Impurities on the Nucleation Rate of Ice Ih
- Crystallization Behavior of Carbamazepine
- The Electronic Interaction of Pt-Clusters with ITO and HOPG Surfaces upon Water Adsorption
- The Oxidation of Rhenium and Identification of Rhenium Oxides During Catalytic Partial Oxidation of Ethylene: An In-Situ XPS Study
- Silicon Nanodot Layers for Photovoltaic Application: Size/Density Control and Electrical Properties
- Influence of the Para-Substitutent of Benzene Diazonium Salts and the Solvent on the Film Growth During Electrochemical Reduction
- Mechanochemical Synthesis of [Zn3(C2O4)3(4,4'-bipy)4] and its Reorganization at High Temperatures
- Topological Investigation of Two-Dimensional Amorphous Materials
- Bombardment Induced Transport of Rb+ through a K+ Conducting Glass vs. K+ Transport through a Rb+ Conducting Glass
Articles in the same Issue
- Frontmatter
- Preface
- Clusters: From the Gas Phase to Materials
- The Role of Clustering in the Liquid-Vapor Transition of Mercury
- Far-IR Spectra of Small Neutral Gold Clusters in the Gas Phase
- Infrared Photodissociation Spectroscopy of C2n+1N− Anions with n = 1 – 5
- Probing Phase Transitions with Supersonic Beams – A Joint Experimental and Theoretical Study
- 2s-Excitation and Photoionization of Neon Clusters
- A More Accurate Molar Mass of Silicon via High Resolution MC-ICP-Mass Spectrometry
- Double Cation Formation from the Photo-Fragmentation of the closo-Carboranes
- The Anomalous Fragmentation of Water Clusters at Ultrafast Impacts: An experimental and Theoretical Study
- A New Liquid Droplet Laser Desorption Source Combined with Supersonic Jet Expansion: Application to Phenol and its Water Clusters
- Wavelength Dependence of Water Microdroplet Shattering with Dual IR Lasers and Dye Sensitization
- The Impact of Non-Electrolyte Impurities on the Nucleation Rate of Ice Ih
- Crystallization Behavior of Carbamazepine
- The Electronic Interaction of Pt-Clusters with ITO and HOPG Surfaces upon Water Adsorption
- The Oxidation of Rhenium and Identification of Rhenium Oxides During Catalytic Partial Oxidation of Ethylene: An In-Situ XPS Study
- Silicon Nanodot Layers for Photovoltaic Application: Size/Density Control and Electrical Properties
- Influence of the Para-Substitutent of Benzene Diazonium Salts and the Solvent on the Film Growth During Electrochemical Reduction
- Mechanochemical Synthesis of [Zn3(C2O4)3(4,4'-bipy)4] and its Reorganization at High Temperatures
- Topological Investigation of Two-Dimensional Amorphous Materials
- Bombardment Induced Transport of Rb+ through a K+ Conducting Glass vs. K+ Transport through a Rb+ Conducting Glass
