Silver nanoparticle plasmonic effects on hole-transport material-free mesoporous heterojunction perovskite solar cells
| Autor: | Hamzeh Nourolahi, Abbas Behjat, Mohammad Agha Bolorizadeh, S.M.M. Hosseini Zarch |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Nanoparticle Nanotechnology 02 engineering and technology Hybrid solar cell 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silver nanoparticle 0104 chemical sciences Optoelectronics General Materials Science Plasmonic solar cell Surface plasmon resonance 0210 nano-technology business Mesoporous material Plasmon Perovskite (structure) |
| Zdroj: | Solar Energy. 139:475-483 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2016.10.023 |
| Popis: | Localized surface plasmon resonance excitation of noble metal nanoparticles (NPs) under light illumination can be incorporated to effectively improve light-harvesting devices. The present study aims at silver nanoparticles (Ag NPs) plasmonic effects on the photovoltaic characteristics of mesoporous hetrojunction perovskite solar cells. Ag NPs were embedded into a compact TiO2 layer, which commonly acts as hole-blocking layer in mesoporous perovskite solar cells. An optimum concentration of Ag NPs loaded on compact TiO2:Ag-NPs films of hole-transport material-free (HTM-free(perovskite solar cells leads to more than 30% enhancement in power conversion efficiency of the fabricated cells compared with what Ag nanoparticle-free samples can do. The improved performance can be attributed to the scattering effect from the incorporated Ag-NPs, which effectively extends the optical pathway of incident light that increases the photon absorption of the photoactive perovskite layer. In addition to the modulated optical properties of HTM-free perovskite solar cells, electrochemical impedance spectroscopy measurements show that electron transport time at the interfacial layer of TiO2 and the photovoltaic perovskite layer decreases as a result of frequency response improvement in the photoanode interface. |
| Databáze: | OpenAIRE |
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