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In situ recycle of PbI2 as a step towards sustainable perovskite solar cells.
- Source :
- Progress in Photovoltaics; Dec2017, Vol. 25 Issue 12, p1022-1033, 12p
- Publication Year :
- 2017
-
Abstract
- The development of organometal halide perovskite solar cells has grown rapidly and the highest efficiency of the devices has recently surpassed 22%. Because these solar cells contain toxic lead, a sustainable strategy is required to prevent environmental pollution and avoid healthy hazard caused by possible lead outflow. Here, in situ recycling PbI<subscript>2</subscript> from thermal decomposition CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3</subscript> perovskite films for efficient perovskite solar cells was developed. The thermal behavior of CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3</subscript> perovskite and its individual components were examined by thermogravimetric analysis. By optimizing the process of thermal decomposition CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3</subscript> film, the complete conversion from CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3</subscript> to pure PbI<subscript>2</subscript> layer with a mesoporous scaffold was achieved. The mesoporous structure readily promotes the conversion efficiency of perovskite and consequently results in high-performance device. A perovskite crystal growth mechanism on the mesoporous PbI<subscript>2</subscript> structure was proposed. These results suggest that in situ recycled PbI<subscript>2</subscript> scaffolds can be a new route in manipulating the morphology of the perovskite active layer, providing new possibilities for high performance. Meanwhile, the risk of lead outflow can be released, and the saving-energy fabrication of efficient solar cells can be realized. [ABSTRACT FROM AUTHOR]
- Subjects :
- PEROVSKITE
SOLAR cells
ORGANOMETALLIC compounds
LEAD iodide
CRYSTAL growth
Subjects
Details
- Language :
- English
- ISSN :
- 10627995
- Volume :
- 25
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Progress in Photovoltaics
- Publication Type :
- Academic Journal
- Accession number :
- 126316438
- Full Text :
- https://doi.org/10.1002/pip.2916