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In Situ Formation of Mixed-Dimensional Surface Passivation Layers in Perovskite Solar Cells with Dual-Isomer Alkylammonium Cations.
Mahmud, Md Arafat; Duong, The; Yin, Yanting; Peng, Jun; Wu, Yiliang; Lu, Teng; Pham, Huyen T; Shen, Heping; Walter, Daniel; Nguyen, Hieu T; Mozaffari, Naeimeh; Tabi, Grace Dansoa; Liu, Yun; Andersson, Gunther; Catchpole, Kylie R; Weber, Klaus J; White, Thomas P.
Afiliación
  • Mahmud MA; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Duong T; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Yin Y; Flinders Institute for Nanoscale Science and Technology, Flinders University, Adelaide, SA, 5042, Australia.
  • Peng J; Flinders Microscopy and Microanalysis, College of Science and Engineering, Flinders University, Adelaide, SA, 5042, Australia.
  • Wu Y; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Lu T; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Pham HT; Research School of Chemistry, The Australian National University, Canberra, ACT, 2601, Australia.
  • Shen H; Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia.
  • Walter D; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Nguyen HT; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Mozaffari N; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Tabi GD; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Liu Y; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
  • Andersson G; Research School of Chemistry, The Australian National University, Canberra, ACT, 2601, Australia.
  • Catchpole KR; Flinders Institute for Nanoscale Science and Technology, Flinders University, Adelaide, SA, 5042, Australia.
  • Weber KJ; Flinders Microscopy and Microanalysis, College of Science and Engineering, Flinders University, Adelaide, SA, 5042, Australia.
  • White TP; Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT, 2601, Australia.
Small ; 16(49): e2005022, 2020 Dec.
Article en En | MEDLINE | ID: mdl-33201580
ABSTRACT
Dimensional engineering of perovskite solar cells has attracted significant research attention recently because of the potential to improve both device performance and stability. Here, a novel 2D passivation scheme for 3D perovskite solar cells is demonstrated using a mixed cation composition of 2D perovskite based on two different isomers of butylammonium iodide. The dual-cation 2D perovskite outperforms its single cation 2D counterparts in surface passivation quality, resulting in devices with an impressive open-circuit voltage of 1.21 V for a perovskite composition with an optical bandgap of ≈1.6 eV, and a champion efficiency of 23.27%. Using a combination of surface elemental analysis and valence electron spectra decomposition, it is shown that an in situ interaction between the 2D perovskite precursor and the 3D active layer results in surface intermixing of 3D and 2D perovskite phases, providing an effective combination of defect passivation and enhanced charge transfer, despite the semi-insulating nature of the 2D perovskite phase. The demonstration of the synergistic interaction of multiple organic spacer cations in a 2D passivation layer offers new opportunities for further enhancement of device performance with mixed dimensional perovskite solar cells.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2020 Tipo del documento: Article País de afiliación: Australia
Texto completo
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2020 Tipo del documento: Article País de afiliación: Australia