Enhancing the Performance of Perovskite Solar Cells by Hybridizing SnS Quantum Dots with CH3NH3PbI3
Abstract
The combination of perovskite solar cells and quantum dot solar cells has significant potential due to the complementary nature of the two constituent materials. In this study, solar cells (SCs) with a hybrid CH3NH3PbI3/SnS quantum dots (QDs) absorber layer are fabricated by a facile and universal in situ crystallization method, enabling easy embedding of the QDs in perovskite layer. Compared with SCs based on CH3NH3PbI3, SCs using CH3NH3PbI3/SnS QDs hybrid films as absorber achieves a 25% enhancement in efficiency, giving rise to an efficiency of 16.8%. The performance improvement can be attributed to the improved crystallinity of the absorber, enhanced photo‐induced carriers' separation and transport within the absorber layer, and improved incident light utilization. The generality of the methods used in this work paves a universal pathway for preparing other perovskite/QDs hybrid materials and the synthesis of entire nontoxic perovskite/QDs hybrid structure.Keywords
Funding Information
- National Natural Science Foundation of China (51561145007)
- National Natural Science Foundation of China
This publication has 29 references indexed in Scilit:
- Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH 3 NH 3 PbI 3Science, 2013
- Morphological Control for High Performance, Solution‐Processed Planar Heterojunction Perovskite Solar CellsAdvanced Functional Materials, 2013
- Phase Stability of the Earth-Abundant Tin Sulfides SnS, SnS2, and Sn2S3The Journal of Physical Chemistry C, 2012
- Solution Synthesis of Ultrathin Single-Crystalline SnS Nanoribbons for Photodetectors via Phase Transition and Surface ProcessingACS Nano, 2012
- 6.5% efficient perovskite quantum-dot-sensitized solar cellNanoscale, 2011
- Band offset of SnS solar cell structure measured by X-ray photoelectron spectroscopyThin Solid Films, 2011
- Breakthroughs in the Development of Semiconductor-Sensitized Solar CellsThe Journal of Physical Chemistry Letters, 2010
- Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic CellsJournal of the American Chemical Society, 2009
- Characterization and Optical Properties of the Single Crystalline SnS Nanowire ArraysDiscover Nano, 2009
- Structure Evolution During Processing of Polycrystalline FilmsAnnual Review of Materials Science, 2000