1 Ocak 2019 Dergi makalesi Açık Erişim

Xiang, Wanchun; Wang, Zaiwei; Kubicki, Dominik J.; Tress, Wolfgang; Luo, Jingshan; Prochowicz, Daniel; Akin, Seckin; Emsley, Lyndon; Zhou, Jiangtao; Dietler, Giovanni; Graetzel, Michael; Hagfeldt, Anders

Citation Style Language JSON

{
  "DOI": "10.1016/j.joule.2018.10.008", 
  "abstract": "All-inorganic perovskite films hold promise for improving the stability of perovskite solar cells (PSCs). However, the 3D alpha phase of narrow-bandgap inorganic perovskites is thermodynamically unstable at room temperature, limiting the development of high-performance inorganic PSCs. Here, we show that europium doping of CsPbI2Br stabilizes the alpha phase of this inorganic perovskite at room temperature. We rationalize it by using solid-state nuclear magnetic resonance and high-angle annular dark-field scanning transmission electron microscopy, which show that europium is incorporated into the perovskite lattice. We demonstrate amaximum power-conversion efficiency of 13.71% for an inorganic PSC with the CsPb0.95Eu0.05I2Br perovskite and alpha stable power output of 13.34%. Using electroluminescence we show that incorporation of europium reduces non-radiative recombination, resulting in high open-circuit voltage of 1.27 V. The devices retain 93% of the initial efficiency after 370 hr under 100 mW cm(-2) continuous white light illumination under maximum-power point-tracking measurement.", 
  "author": [
    {
      "family": "Xiang", 
      "given": " Wanchun"
    }, 
    {
      "family": "Wang", 
      "given": " Zaiwei"
    }, 
    {
      "family": "Kubicki", 
      "given": " Dominik J."
    }, 
    {
      "family": "Tress", 
      "given": " Wolfgang"
    }, 
    {
      "family": "Luo", 
      "given": " Jingshan"
    }, 
    {
      "family": "Prochowicz", 
      "given": " Daniel"
    }, 
    {
      "family": "Akin", 
      "given": " Seckin"
    }, 
    {
      "family": "Emsley", 
      "given": " Lyndon"
    }, 
    {
      "family": "Zhou", 
      "given": " Jiangtao"
    }, 
    {
      "family": "Dietler", 
      "given": " Giovanni"
    }, 
    {
      "family": "Graetzel", 
      "given": " Michael"
    }, 
    {
      "family": "Hagfeldt", 
      "given": " Anders"
    }
  ], 
  "container_title": "JOULE", 
  "id": "74207", 
  "issue": "1", 
  "issued": {
    "date-parts": [
      [
        2019, 
        1, 
        1
      ]
    ]
  }, 
  "page": "205-214", 
  "title": "Europium-Doped CsPbI2Br for Stable and Highly Efficient Inorganic Perovskite Solar Cells", 
  "type": "article-journal", 
  "volume": "3"
}