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Crystalline orientation control of quasi two-dimensional structure towards high efficiency and durable perovskite solar cells

Research Project

Project/Area Number 17K14533
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Organic and hybrid materials
Research InstitutionToin University of Yokohama

Principal Investigator

Sanehira Yoshitaka  桐蔭横浜大学, 工学(系)研究科(研究院), 研究員(移行) (10751373)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords有機無機複合材料 / ペロブスカイト / 太陽電池 / 結晶配向性 / ナノ構造制御 / ナノ材料 / 酸化チタン / ペロブスカイト太陽電池 / 酸化チタンナノワイヤアレイ
Outline of Final Research Achievements

The organic-inorganic hybrid perovskite solar cells (PSCs), which moisture resistance is imparted by applying the hydrophobic structure of long-chain alkyl ammonium cation, forms two-dimensional (2D) crystal with layered structure. We succeeded to control the orientation of the 2D perovskite crystal in the PSCs by construction a nanostructure array of TiO2 electron transport layer which has function as a scaffold of perovskite layer. Resulting photovoltaic characteristics of the 2D-PSCs were improved, and suggested that the crystal orientation of 2D perovskite layer significantly affects charge transfer to external circuit. Furthermore, the quasi-2D structure was formed by introducing long-chain alkyl ammonium cation at the interface between the perovskite layer and the hole transport layer, showed to contribute to enhancing in the photovoltaic properties of PSCs. These results are important guideline for improving the photovoltaic characteristics toward the practical use of the PSCs.

Academic Significance and Societal Importance of the Research Achievements

純二次元系ペロブスカイトを用いたペロブスカイト太陽電池の研究として、その結晶配向性を明確に制御し、太陽電池特性への影響を示した点について、類似した研究例は他に見当たらず、本研究が唯一のものとなる。また、光電変換効率についても、純二次元ペロブスカイトとして報告されたものの中では最も高い値を示しており、学術的に独創性の高い結果が得られた。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Spontaneous Synthesis of Highly Crystalline TiO2 Compact/Mesoporous Stacked Films by a Low-Temperature Steam-Annealing Method for Efficient Perovskite Solar Cells2018

    • Author(s)
      Sanehira Yoshitaka、Numata Youhei、Ikegami Masashi、Miyasaka Tsutomu
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 10 Issue: 20 Pages: 17195-17202

    • DOI

      10.1021/acsami.8b03532

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photovoltaic Properties of Two-dimensional (CH3(CH2)3NH3)2PbI4 Perovskite Crystals Oriented with TiO2 Nanowire Array2017

    • Author(s)
      Sanehira Yoshitaka, Numata Youhei, Ikegami Masashi, Miyasaka Tsutomu
    • Journal Title

      Chemistry Letters

      Volume: 46 Issue: 8 Pages: 1204-1206

    • DOI

      10.1246/cl.170428

    • NAID

      130005906940

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] バンドギャップのチューニングによるNbドープ酸化チタン/ペロブスカイト太陽電池の高効率化2019

    • Author(s)
      實平 義隆, 柴山 直之, 沼田 陽平, 池上 和志, 宮坂 力
    • Organizer
      第66回 応用物理学会 春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ペロブスカイト太陽電池の高効率化に向けたニオブ,スズ共ドープ酸化チタン膜の水蒸気加熱製膜2018

    • Author(s)
      實平 義隆,沼田 陽平,池上 和志,宮坂 力
    • Organizer
      第79回 応用物理学会 秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 高効率ペロブスカイト太陽電池に向けた水蒸気加熱法によるITO基板上への高結晶性酸化チタン膜の低温製膜2018

    • Author(s)
      實平 義隆,沼田 陽平,池上 和志,宮坂 力
    • Organizer
      第65回応用物理学会 春季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 水蒸気加熱法による酸化チタン多孔膜のナノ構造制御とペロブスカイト太陽電池への応用2017

    • Author(s)
      實平 義隆,沼田 陽平,池上 和志,宮坂 力
    • Organizer
      第78回応用物理学会 秋季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Improvement of Photovoltaic Properties of Vertically Oriented Two-Dimensional Perovskite Using TiO2 Nanowire as a Orientation-Determinate Scaffold2017

    • Author(s)
      Yoshitaka Sanehira, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka
    • Organizer
      11th Aseanian Conference on Nano-Hybrid Solar Cells (NHSC11)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2020-03-30  

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