Electrodeposited NiO anode interlayers: Enhancement of the charge carrier selectivity in organic solar cells
| Autor: | Ramón Tena-Zaera, Germà Garcia-Belmonte, Eneko Azaceta, Teresa Ripolles-Sanchis, Antonio Guerrero |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Organic solar cell Renewable Energy Sustainability and the Environment Nickel oxide Non-blocking I/O 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Charge carrier selectivity Chemical engineering PEDOT:PSS Organic photovoltaics Hole transport layer Charge carrier Thin film 0210 nano-technology Selectivity |
| Zdroj: | Repositori Universitat Jaume I Universitat Jaume I |
| ISSN: | 0927-0248 |
| Popis: | Nickel oxide (NiO) thin films prepared by cathodic electrodeposition exhibit superior electrical performace than PEDOT:PSS when used as anode interlayers of bulk-heterojunction solar cells. Devices incorporating 30 nm-thick NiO films firstly annealed at 320 °C in air and posteriorly treated with UV-O 3 reach power conversion efficiencies comparable to that obtained for PEDOT:PSS-based cells. NiO interlayers enhance contact selectivity by simulataneously increasing shunt resistance (lower leakage current related to electron-blocking ability), and reducing hole-extraction resistance. Carrier selectivity is quantified from the resistance components associated with the impedance response of the anode contacts. The versatile electrodeposition technique of NiO interlayers permits avoiding PEDOT:PSS use as it presents disadvantages related to its acid character and hygroscopic nature. |
| Databáze: | OpenAIRE |
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