1 Ocak 2021 Dergi makalesi Açık Erişim

Gunes, Ummugulsum; Bag Celik, Esra; Akgul, Cevahir C.; Koc, Mehmet; Ameri, Mohsen; Uzuner, Bahri E.; Ghasemi, Milad; Sahiner, Mehmet C.; Yildiz, Ilker; Kaya, Hava Z.; Yerci, Selcuk; Gunbas, Gorkem

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{
  "DOI": "10.1002/adfm.202103130", 
  "abstract": "Perovskite surface treatment with additives has been reported to improve charge extraction, stability, and/or surface passivation. In this study, treatment of a 3D perovskite ((FAPbI(3))(1-)(x)(MAPbBr(3))(x)) layer with a thienothiophene-based organic cation (TTMAI), synthesized in this work, is investigated. Detailed analyses reveal that a 2D (n = 1) or quasi-2D layer does not form on the PbI2-rich surface 3D perovskite. TTMAI-treated 3D perovskite solar cells (PSCs) fabricated in this study show improved fill factors, providing an increase in their power conversion efficiencies (PCEs) from 17% to over 20%. It is demonstrated that the enhancement is due to better hole extraction by drift-diffusion simulations. Furthermore, thanks to the hydrophobic nature of the TTMAI, PSC maintains 82% of its initial PCE under 15% humidity for over 380 h (the reference retains 38%). Additionally, semitransparent cells are demonstrated reaching 17.9% PCE with treated 3D perovskite, which is one of the highest reported efficiencies for double cationic 3D perovskites. Moreover, the semitransparent 3D PSC (TTMAI-treated) maintains 87% of its initial efficiency for six weeks (>1000 h) when kept in the dark at room temperature. These results clearly show that this study fills a critical void in perovskite research where highly efficient and stable semitransparent perovskite solar cells are scarce.", 
  "author": [
    {
      "family": "Gunes", 
      "given": " Ummugulsum"
    }, 
    {
      "family": "Bag Celik", 
      "given": " Esra"
    }, 
    {
      "family": "Akgul", 
      "given": " Cevahir C."
    }, 
    {
      "family": "Koc", 
      "given": " Mehmet"
    }, 
    {
      "family": "Ameri", 
      "given": " Mohsen"
    }, 
    {
      "family": "Uzuner", 
      "given": " Bahri E."
    }, 
    {
      "family": "Ghasemi", 
      "given": " Milad"
    }, 
    {
      "family": "Sahiner", 
      "given": " Mehmet C."
    }, 
    {
      "family": "Yildiz", 
      "given": " Ilker"
    }, 
    {
      "family": "Kaya", 
      "given": " Hava Z."
    }, 
    {
      "family": "Yerci", 
      "given": " Selcuk"
    }, 
    {
      "family": "Gunbas", 
      "given": " Gorkem"
    }
  ], 
  "container_title": "ADVANCED FUNCTIONAL MATERIALS", 
  "id": "235600", 
  "issue": "42", 
  "issued": {
    "date-parts": [
      [
        2021, 
        1, 
        1
      ]
    ]
  }, 
  "title": "A Thienothiophene-Based Cation Treatment Allows Semitransparent Perovskite Solar Cells with Improved Efficiency and Stability", 
  "type": "article-journal", 
  "volume": "31"
}