2018 Fiscal Year Annual Research Report
Exploration of stable and efficient Tin Perovskite Solar Cells for next generation PV
| Project/Area Number |
18H02079
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
イスラム アシュラフル 国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究拠点, 主席研究員 (70531177)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Keywords | Sensitized Solar Cell / Perovskite Solar Cell / Pb free / Sn perovskite |
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| Outline of Annual Research Achievements |
During last year, I have design and synthesized many stable fluorous ammonium salts with Fluorous mono- and bisammonium cations A’ having different structures. The finetune of the non-covalent interactions was observed by the systematic variation of the length of linear perfluoro-alkyl chain, the length of the alkylene spacer and also the additional insertion of an aryl unit between the fluorous and the alkylene segments. The research results are presented at two international scientific meeting and also published in peer reviewed scientific journals.
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
In the beginning of the research I have find some difficulties to synthesis the fluorous ammonium salts with Fluorous mono- and bisammonium cations A’ which delayed my research schedule from the original time frame. Due to this reason, I could not complete some research Tasks in Phase I.
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| Strategy for Future Research Activity |
Phase II: To prepare the films of dimensionally tuned PS: Development of 2D/3D ultra-stable perovskite absorbers films by tuning cation and anion composition.
Task1. One-step precursor deposition and sequential deposition methods will be used to form high quality 2D PS films. Task 2. Characterization of the 2D/3D dimensional PS films: Morphological and optoelectronic characterization and degradation analysis and environmental stability of the films.
Phase III: Fabrication of graded heterojunction structure (GHJ) in planar PSCs using 2D/3D dimensional PS films:
Task 1. Preparation and performance evaluation of prototype PSCs: Selected 2D/3D dimensionally tuned PS prepared will be integrated as absorbers in a graded heterojunction structure (GHJ) in planar PSCs and using heavily doped inorganic charge extraction layers of NiMgLiO and Ti(Nb)Ox. Task 2. Performance evaluation of prototype PSCs: Photovoltaic performances of the PSCs will be evaluated by J-V) characteristics, external quantum efficiency (EQE) and the long-term stability of devices will be assessed by comparison of their J-V curves as a function of storage time in air.
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