Ultrathin TiO2-coated SiO2 nanoparticles as light scattering centers for quantum dot-sensitized solar cells

被引：0

作者：

Basit, Muhammad Abdul ^{[1
]}

Abbas, Muhammad Awais ^{[2
]}

Naeem, Hafiz Muhammad ^{[1
]}

Ali, Ijaz ^{[3
]}

Jang, Eunyong ^{[3
]}

Bang, Jin Ho ^{[2
,4
,5
]}

Park, Tae Joo ^{[3
,6
]}

机构：

[1] Department of Materials Science and Engineering, Institute of Space Technology, Islamabad,44000, Pakistan

[2] Nanosensor Research Institute, Hanyang University, Ansan,15588, Korea, Republic of

[3] Department of Materials Science and Chemical Engineering, Hanyang University, Ansan,15588, Korea, Republic of

[4] Department of Chemical and Molecular Engineering, Hanyang University, Ansan,15588, Korea, Republic of

[5] Department of Bionano Technology, Hanyang University, Ansan,15588, Korea, Republic of

[6] Department of Advanced Materials Engineering, Hanyang University, Ansan,15588, Korea, Republic of

来源：

Materials Research Bulletin | 2020年 / 127卷

关键词：

Carrier lifetime - Lead compounds - TiO2 nanoparticles - IV-VI semiconductors - Semiconductor quantum dots - SiO2 nanoparticles - Electrochemical impedance spectroscopy - Deterioration - Nanocrystals - Light - Light scattering - Titanium dioxide - Silicon - Silica nanoparticles;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

SiO2/TiO2 core/shell nanoparticles (ST-NPs) with an ultrathin and conformal TiO2 shell were fabricated via atomic layer deposition (ALD) technique with a specially-designed rotary reactor. We successfully employed the ST-NPs as light scattering centers in a mesoporous TiO2 photoanode in quantum dot (QD)-sensitized solar cells (QDSSCs). ST-NPs enhanced the light scattering in the TiO2 photoanode without deterioration of QD loading behavior. Consequently, visible light absorbance was improved in the PbS QDs-sensitized TiO2 photoanode, and thus the photocurrent density increased from 14 to 17 mA/cm2. Detailed electron microscopy was utilized to reveal the uniqueness of the ultrathin TiO2 shell in ST-NPs, and in-depth electrochemical impedance spectroscopy divulged the increase in photogenerated carrier lifetime and improved recombination resistance for the QDSSC with ST-NPs. © 2020 Elsevier Ltd

引用