Hydrogenated nanocrystalline silicon-based layers for silicon heterojunction and perovskite/c-Si tandem solar cells
Y. Zhao (TU Delft - Photovoltaic Materials and Devices)
Arthur Weeber – Promotor (TU Delft - Photovoltaic Materials and Devices)
O. Isabella – Promotor (TU Delft - Photovoltaic Materials and Devices)
M Zeman – Promotor (TU Delft - Photovoltaic Materials and Devices)
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Abstract
Large-scale deployment of photovoltaic (PV) technology is imperative for realizing a future sustainable and electrified energy system. Over the past decades, technological advancements that enhance the efficiency of PV technologies have been one of the crucial aspects for significantly reducing the cost of PV-generated electricity. Among various crystalline silicon (c-Si) PV technologies, silicon heterojunction (SHJ) solar cells, which have achieved the highest efficiency of single-junction c-Si solar cells, hold great promise for advancing the energy transition facilitated by PV technologies even further. Moreover, notable efficiency enhancements, which are well beyond the theoretical efficiency limit of single-junction c-Si solar cells, have been experimentally demonstrated by combining SHJ solar cells with semi-transparent perovskite solar cells in tandem configurations. This thesis focuses on addressing the challenges of efficient deployments of doped hydrogenated nanocrystalline silicon-based (nc-Si:H-based) layers for high-efficiency front/back-contacted (FBC) SHJ solar cells and applications of FBC-SHJ bottom-cells in two-terminal (2T) and four-terminal (4T) tandem devices with perovskite top-cells, supported by advanced opto-electrical simulations.
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