Metal-insulator transition in nanoparticle solar cells
| Autor: | Gergely T. Zimanyi, Márton Vörös, Luman Qu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Electron mobility
Condensed matter physics Chemistry Nanoparticle 02 engineering and technology Electron 021001 nanoscience & nanotechnology 01 natural sciences Delocalized electron Chemical physics Phase (matter) 0103 physical sciences Condensed Matter::Strongly Correlated Electrons Kinetic Monte Carlo Metal–insulator transition 010306 general physics 0210 nano-technology Quantum |
| Zdroj: | 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC). |
| Popis: | Recently, Metal-Insulator Transitions (MIT) were reported in Nanoparticle (NP) films. We developed a Kinetic Monte Carlo transport model to simulate the MIT. Electrons transfer between neighboring NPs with activated hopping if the NP energies differ by more than an overlap energy, but transfer by a non-activated quantum delocalization, if the NP energies are closer than that. As the NP-NP overlap energy is increased, percolating clusters emerge that support a metallic transport across the entire film. We simulated the evolution of the temperature-dependent electron mobility from the insulating phase to the MIT, and the effective transport gap evolving towards zero. |
| Databáze: | OpenAIRE |
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