High Photovoltage of 1 V on a Steady-State Certified Hole Transport Layer-Free Perovskite Solar Cell by a Molten-Salt Approach
| Autor: | Sijo Chacko, Andreas Hinsch, Lukas Wagner, Gayathri Mathiazhagan, Simone Mastroianni |
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| Rok vydání: | 2018 |
| Předmět: |
Quenching
Photoluminescence Materials science Renewable Energy Sustainability and the Environment Nanoporous Analytical chemistry Energy Engineering and Power Technology Perovskite solar cell 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Fuel Technology Solar cell efficiency Chemistry (miscellaneous) Materials Chemistry Charge carrier Molten salt 0210 nano-technology Perovskite (structure) |
| Zdroj: | ACS Energy Letters. 3:1122-1127 |
| ISSN: | 2380-8195 |
| Popis: | The determination of certified efficiency values for perovskite solar cells from current–voltage sweeps is under growing discussion. Here, we report for the first time a certified steady-state solar efficiency for a hole transport layer (HTL)-free perovskite cell of 12.6% measured continuously at maximum power point in an accredited laboratory. By applying a molten-salt-based MAPbI3 precursor solution, dense filling and improved perovskite crystallization inside the nanoporous graphite-based monolithic contact scaffold of the cell are achieved. A stabilized photovoltage as high as 1 V is achieved, representing the highest VOC reported for HTL-free MAPbI3-based devices. Charge transport properties are determined by switching from open- to short-circuit conditions. Strong and stable quenching of the photoluminescence indicates effective transportation and extraction of the photoexcited primary charge carriers. The existence of an efficient HTL-free device suggests that these cells are more of an n-p junctio... |
| Databáze: | OpenAIRE |
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