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Article Dans Une Revue Solar RRL Année : 2022

Low Voltage‐Loss Organic Solar Cells Light the Way for Efficient Semitransparent Photovoltaics

Benjamin R. Luginbuhl
  • Fonction : Auteur
Seo-Jin Ko
  • Fonction : Auteur
Niva A. Ran
  • Fonction : Auteur
Huawei Hu
  • Fonction : Auteur
Shona M. Becwar
  • Fonction : Auteur
Akchheta Karki
  • Fonction : Auteur
Martin Seifrid
  • Fonction : Auteur
Takashi Okubo
  • Fonction : Auteur
Ming Wang
  • Fonction : Auteur
Harald W. Ade
  • Fonction : Auteur
Bradley F. Chmelka
  • Fonction : Auteur
Guillermo C. Bazan
  • Fonction : Auteur
Thuc-Quyen Nguyen
  • Fonction : Auteur

Résumé

Organic solar cells that are transparent to visible light are highly desirable for applications such as window treatments or solar greenhouse panels. A key challenge is to simultaneously transmit most photons between 400 and 700 nm while retaining a high short‐circuit current and power conversion efficiency (PCE). Here, organic bulk heterojunction (BHJ) solar cells consisting of a donor polymer (PM2) is reported and the non‐fullerene acceptor ITIC‐Th achieves a PCE of 9.3%, and the BHJ thin films exhibit an average visible transmittance over 40%. This value is achieved primarily due to a very high open‐circuit voltage (VOC) of 0.93 V, which represents a voltage loss of only 0.50 V relative to the material optical bandgap, Eopt. In PM2:PC61BM devices, this voltage loss increases to 0.62 V (VOC = 0.82 V). It is found that this difference in VOC is due to higher nonradiative recombination in the fullerene‐based solar cell, suggesting that non‐fullerene acceptors may lead to better performance in semi‐transparent devices. The optoelectronic properties associated with PM2:ITIC‐Th and PM2:PC61BM blends are further corroborated by different morphological features and local structures at the donor‐acceptor interfaces characterized by atomic force microscopy, X‐ray scattering, and solid‐state NMR spectroscopy techniques.

Dates et versions

hal-04531051 , version 1 (03-04-2024)

Identifiants

Citer

Benjamin R. Luginbuhl, Seo-Jin Ko, Niva A. Ran, Huawei Hu, Shona M. Becwar, et al.. Low Voltage‐Loss Organic Solar Cells Light the Way for Efficient Semitransparent Photovoltaics. Solar RRL, 2022, Solar RRL, 6 (8), ⟨10.1002/solr.202200135⟩. ⟨hal-04531051⟩
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