Abstract
Strain effects on vacancies, electronic states and stability have been disclosed for perovskite structured materials (ABX3) including metal oxides and organic-inorganic hybrids critical for energy storage and generation. Ion substitution has been pursued as an attractive solution to alter the crystallization or induced electronic of organic-inorganic hybrid halide lead perovskite. However, the disorganized structure of perovskite result from inappropriate substitution may cause unwanted phase transition and photo-stability. Herein, we introduce crystallization of restriction ABX3 composition with moderate zinc (Zn) substitution to obtain the ordered and stable CH3NH3(Zn:Pb)I3-xClx crystal, which is achieved via releasing lattice strain during an appropriate lattice constriction within BX6 octahedron. We obtained an unprecedented efficiency of 20.06% under simulated sunlight with facilitating binary metal perovskite of CH3NH3(1Zn:100Pb)I3-xClx. Our results are important to realize scale up and practical applications of efficient planar perovskite solar cells.
Original language | English |
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Pages (from-to) | 117-127 |
Number of pages | 11 |
Journal | Nano Energy |
Volume | 48 |
DOIs | |
Publication status | Published - 1 Jun 2018 |
Externally published | Yes |
Keywords
- Crystallization
- Ordered structure
- Perovskite solar cell
- Strain
- Substitution