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<p>Photovoltaic-thermoelectric (PV-TE) hybrid systems offer a platform for enhancing the energy conversion efficiency of photovoltaic devices. However, they still suffer from energy losses and limited efficiency improvements owing to underutilized parasitic thermal energy and electrical parameters mismatches between PV and TE components. Here, we presented a comprehensive theoretical analysis and simulation based on a PV-TE Thermo-Electrical Coupling Model, predicting that the maximum efficiency of the system could reach 60.34% with state-of-the-art PV and commercial TE technologies. Following this model, we fabricated hybrid systems with organic and perovskite solar cells coupled with thermoelectric cells, achieving record-high efficiencies of 34.85% and 42.03% at 298 K, and 43.16% and 50.28% at 313 K, respectively, under AM 1.5 G illumination, with optimal thermal utilization and current matching between series-connected PV and TE modules. This work highlights the potential of PV-TE hybrid systems and could offer guidance for designing higher-efficiency systems, driving future advancements in photovoltaics.</p>

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Solution-processed photovoltaic and thermoelectric hybrid systems with efficiency exceeding 50%

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月3日

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  • Zhanzhao Yin,
  • Ding Zhang,
  • Longyu Li,
  • Yuping Gao,
  • Yongsheng Liu,
  • Xiangjian Wan,
  • Rujun Ma,
  • Yongsheng Chen

摘要

Photovoltaic-thermoelectric (PV-TE) hybrid systems offer a platform for enhancing the energy conversion efficiency of photovoltaic devices. However, they still suffer from energy losses and limited efficiency improvements owing to underutilized parasitic thermal energy and electrical parameters mismatches between PV and TE components. Here, we presented a comprehensive theoretical analysis and simulation based on a PV-TE Thermo-Electrical Coupling Model, predicting that the maximum efficiency of the system could reach 60.34% with state-of-the-art PV and commercial TE technologies. Following this model, we fabricated hybrid systems with organic and perovskite solar cells coupled with thermoelectric cells, achieving record-high efficiencies of 34.85% and 42.03% at 298 K, and 43.16% and 50.28% at 313 K, respectively, under AM 1.5 G illumination, with optimal thermal utilization and current matching between series-connected PV and TE modules. This work highlights the potential of PV-TE hybrid systems and could offer guidance for designing higher-efficiency systems, driving future advancements in photovoltaics.