Understanding InP Nanowire Array Solar Cell Performance by Nanoprobe-Enabled Single Nanowire Measurements
| Autor: | Gerald Siefer, Magnus Heurlin, K. Erik Svensson, Ingvar Åberg, Magnus T. Borgström, Gaute Otnes, Lars Samuelson, Christian Sundvall, Enrique Barrigón |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
CalLab PV Cells
Materials science Nanowire Nanoprobe Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy law.invention NEXTNANOCELLS law Grant 656208 Solar cell characterization General Materials Science Thin film Diode EU Horizon H2020 business.industry Mechanical Engineering Electron beam-induced current InP General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Characterization (materials science) power conversion efficiency solar cell EBIC nanowire nanoprobe Optoelectronics Nano Technology Charge carrier 0210 nano-technology business Servicebereich |
| Zdroj: | Nano Letters; 18(5), pp 3038-3046 (2018) Nano Letters |
| ISSN: | 1530-6984 |
| Popis: | III−V solar cells in the nanowire geometry mighth old significant synthesis-cost and device-design advantages as compared to thin films and have shown impressive performance improvements in recent years. To continue this development there is a need for characterization techniques giving quick and reliable feedback for growth development. Further, characterization techniques which can improve understanding of the link between nanowire growth conditions, subsequent processing, and solar cell performance are desired. Here, we present the use of a nanoprobe system inside a scanning electron microscope to efficiently contact single nanowires and characterize them in terms of key parameters for solar cell performance. Specifically, we study single as-grown InP nanowires and use electron beam induced current characterization to understand the charge carrier collection properties, and dark current−voltage characteristics to understand the diode recombination characteristics. By correlating the single nanowire measurements to performance of fully processed nanowire array solar cells, we identify how the performance limiting parameters are related to growth and/or processing conditions. We use this understanding to achieve a more than 7-fold improvement in efficiency of our InP nanowire solar cells, grown from a different seed particle pattern than previously reported from our group. The best cell shows a certified efficiency of 15.0%; the highest reported value for a bottom-up synthesized InP nanowire solar cell. We believe the presented approach have significant potential to speed-up the development of nanowire solar cells, as well as other nanowire-based electronic/optoelectronic devices. |
| Databáze: | OpenAIRE |
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