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Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process
- Source :
- Organic Electronics. 41:266-273
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- In conventional sequential deposition, PbI 2 -free CH 3 NH 3 PbI 3 perovskite films can be achieved when the PbI 2 substrate reacts with a relatively low-concentration CH 3 NH 3 I solution ( 3 NH 3 I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH 3 NH 3 PbI 3 perovskite film can be formed on a mesoporous TiO 2 substrate when the PbI 2 substrate reacts with a relatively high-concentration MAI solution (>8 mg of CH 3 NH 3 I per 1 mL of IPA), but unreacted PbI 2 is still present in CH 3 NH 3 PbI 3 layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI 2 -free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI 2 and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved.
- Subjects :
- Chemical substance
Chemistry
Substrate (chemistry)
Nanotechnology
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
Electronic, Optical and Magnetic Materials
law.invention
Biomaterials
Magazine
Chemical engineering
law
Materials Chemistry
Thermal stability
Electrical and Electronic Engineering
0210 nano-technology
Science, technology and society
Mesoporous material
Layer (electronics)
Perovskite (structure)
Subjects
Details
- ISSN :
- 15661199
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Organic Electronics
- Accession number :
- edsair.doi...........d9a9dd0b38cc6419fc22323c1b4b222d