Abstract
∼10 nm sized MoO2 nanoparticles with high BET surface area of 170.14 m2/g were synthesized via scalable new process of combining the ultrasonic spray pyrolysis and solvothermal cracking process. Initially, we synthesized polycrystalline MoO3 microparticles by the ultrasonic spray pyrolysis at 500 °C or 600 °C. Then the MoO3 microparticles were disassembled into crystalline grains and the grains were subsequently shattered to small MoO2 nanoparticles through the solvothermal polyol reduction process because the polycrystalline MoO3 microparticles are disassembled by thermal expansion and the crystalline MoO3 grains are shattered by volume shrinkage due to phase transition from MoO3 to MoO2. Finally, we applied the MoO2 nanoparticles/toluene solution to new inorganic hole transporting material for planar CH3NH3PbI3 perovskite solar cells. The planar type CH3NH3PbI3 perovskite solar cells exhibited stable efficiency of 14.8% for forward scan condition and 15.5% for reverse scan condition under illumination of 1 Sun (100 mW/cm2).
| Original language | English |
|---|---|
| Pages (from-to) | 179-186 |
| Number of pages | 8 |
| Journal | Chemical Engineering Journal |
| Volume | 310 |
| DOIs | |
| Publication status | Published - 2017 Feb 15 |
| Externally published | Yes |
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Keywords
- Molybdenum dioxides
- Perovskite solar cell
- Solvothermal cracking process
- Ultrasonic spray pyrolysis
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Facile scalable synthesis of MoO2 nanoparticles by new solvothermal cracking process and their application to hole transporting layer for CH3NH3PbI3 planar perovskite solar cells. / Choi, Hanseul; Heo, Jin Hyuck; Ha, Su; Kwon, Byeong Wan; Yoon, Sung Pil; Han, Jonghee; Kim, Woo Sik; Im, Sang Hyuk; Kim, Jinsoo.
In: Chemical Engineering Journal, Vol. 310, 15.02.2017, p. 179-186.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Facile scalable synthesis of MoO2 nanoparticles by new solvothermal cracking process and their application to hole transporting layer for CH3NH3PbI3 planar perovskite solar cells
AU - Choi, Hanseul
AU - Heo, Jin Hyuck
AU - Ha, Su
AU - Kwon, Byeong Wan
AU - Yoon, Sung Pil
AU - Han, Jonghee
AU - Kim, Woo Sik
AU - Im, Sang Hyuk
AU - Kim, Jinsoo
PY - 2017/2/15
Y1 - 2017/2/15
N2 - ∼10 nm sized MoO2 nanoparticles with high BET surface area of 170.14 m2/g were synthesized via scalable new process of combining the ultrasonic spray pyrolysis and solvothermal cracking process. Initially, we synthesized polycrystalline MoO3 microparticles by the ultrasonic spray pyrolysis at 500 °C or 600 °C. Then the MoO3 microparticles were disassembled into crystalline grains and the grains were subsequently shattered to small MoO2 nanoparticles through the solvothermal polyol reduction process because the polycrystalline MoO3 microparticles are disassembled by thermal expansion and the crystalline MoO3 grains are shattered by volume shrinkage due to phase transition from MoO3 to MoO2. Finally, we applied the MoO2 nanoparticles/toluene solution to new inorganic hole transporting material for planar CH3NH3PbI3 perovskite solar cells. The planar type CH3NH3PbI3 perovskite solar cells exhibited stable efficiency of 14.8% for forward scan condition and 15.5% for reverse scan condition under illumination of 1 Sun (100 mW/cm2).
AB - ∼10 nm sized MoO2 nanoparticles with high BET surface area of 170.14 m2/g were synthesized via scalable new process of combining the ultrasonic spray pyrolysis and solvothermal cracking process. Initially, we synthesized polycrystalline MoO3 microparticles by the ultrasonic spray pyrolysis at 500 °C or 600 °C. Then the MoO3 microparticles were disassembled into crystalline grains and the grains were subsequently shattered to small MoO2 nanoparticles through the solvothermal polyol reduction process because the polycrystalline MoO3 microparticles are disassembled by thermal expansion and the crystalline MoO3 grains are shattered by volume shrinkage due to phase transition from MoO3 to MoO2. Finally, we applied the MoO2 nanoparticles/toluene solution to new inorganic hole transporting material for planar CH3NH3PbI3 perovskite solar cells. The planar type CH3NH3PbI3 perovskite solar cells exhibited stable efficiency of 14.8% for forward scan condition and 15.5% for reverse scan condition under illumination of 1 Sun (100 mW/cm2).
KW - Molybdenum dioxides
KW - Perovskite solar cell
KW - Solvothermal cracking process
KW - Ultrasonic spray pyrolysis
UR - http://www.scopus.com/inward/record.url?scp=84997207068&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84997207068&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2016.10.110
DO - 10.1016/j.cej.2016.10.110
M3 - Article
AN - SCOPUS:84997207068
VL - 310
SP - 179
EP - 186
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -