Hidden Tandem Solar Cells
| Autor: | Kuznicki, Z. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.4229/wcpec-82022-1cv.2.19 |
| Popis: | 8th World Conference on Photovoltaic Energy Conversion; 113-118 According to Shockley-Queisser theory, the efficiency of single junction Si solar cells is unequivocally limited to about 30%. This limit can be overcome by localized nanostructuring of the crystal lattice inside the silicon wafer. The nanocomponents of the device taking the form of electronic walls give the converter fascinating optoelectronic properties that are particularly important in the photovoltaic field. The device, called a hidden tandem solar cell, is enriched by a secondary conversion, which adds without disturbance to the initial performance of the high-efficiency host converter. The conditioned electron wall is occupied by low-energy generation centers that are enough numerous to interact efficiently with hot electrons resulting from the primary conversion. The integration of the electronic walls has become possible thanks to specific methods of local energy deposition and subsequent technological treatment that only allows the desired physical effects to be achieved. A selection of experimental results obtained on laboratory and commercial-sized industrial devices is presented in the paper. The different approaches providing proofs of concept take into account structural and optoelectronic aspects of the new type of silicon converters. The resulting conversion yield at this stage of R&D overpasses 27.0%. |
| Databáze: | OpenAIRE |
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