TY - JOUR
T1 - Organic-free Anatase TiO2Paste for Efficient Plastic Dye-Sensitized Solar Cells and Low Temperature Processed Perovskite Solar Cells
AU - Fu, Nianqing
AU - Huang, Chun
AU - Liu, Yan
AU - Li, Xing
AU - Lu, Wei
AU - Zhou, Li Min
AU - Peng, Feng
AU - Liu, Yanchun
AU - Huang, Haitao
PY - 2015/8/18
Y1 - 2015/8/18
N2 - Recently, the synthesis of fine TiO2paste with organic-free binder emerged as an indispensable technique for plastic photovoltaics due to the low temperature processing requirement. In this study, pure anatase TiO2nanoparticles and organic-free TiO2-sol were successfully synthesized individually in organic-free solution. By mixing the pure anatase TiO2with the newly developed TiO2-sol binder, mechanically robust and well-interconnected TiO2films were prepared via UV-irradiation at low temperature for applications in plastic dye-sensitized solar cells (p-DSSCs). The structural, electrical, and photovoltaic properties of the films as well as the devices were investigated by various techniques. The dye-loading amount of the obtained film is 2.6 times that of the P25 electrodes. As revealed by electrochemical impedance spectroscopy results, the film derived from the as-prepared anatase TiO2paste (A-TiO2) exhibits much smaller charge transport resistance and lower electron recombination rate than the P25 film, while the introduction of TiO2-sol into the paste can further remarkably decrease the resistance of the produced film (AS-TiO2). The p-DSSCs employing AS-TiO2photoanode yield a high efficiency up to 7.51%, which is 86% higher than the P25 reference cells and also 31% higher than the A-TiO2cell. As a proof of concept, the newly developed AS-TiO2paste was also applied to low temperature processed perovskite solar cells (PSCs), and a promising high efficiency up to 9.95% was achieved.
AB - Recently, the synthesis of fine TiO2paste with organic-free binder emerged as an indispensable technique for plastic photovoltaics due to the low temperature processing requirement. In this study, pure anatase TiO2nanoparticles and organic-free TiO2-sol were successfully synthesized individually in organic-free solution. By mixing the pure anatase TiO2with the newly developed TiO2-sol binder, mechanically robust and well-interconnected TiO2films were prepared via UV-irradiation at low temperature for applications in plastic dye-sensitized solar cells (p-DSSCs). The structural, electrical, and photovoltaic properties of the films as well as the devices were investigated by various techniques. The dye-loading amount of the obtained film is 2.6 times that of the P25 electrodes. As revealed by electrochemical impedance spectroscopy results, the film derived from the as-prepared anatase TiO2paste (A-TiO2) exhibits much smaller charge transport resistance and lower electron recombination rate than the P25 film, while the introduction of TiO2-sol into the paste can further remarkably decrease the resistance of the produced film (AS-TiO2). The p-DSSCs employing AS-TiO2photoanode yield a high efficiency up to 7.51%, which is 86% higher than the P25 reference cells and also 31% higher than the A-TiO2cell. As a proof of concept, the newly developed AS-TiO2paste was also applied to low temperature processed perovskite solar cells (PSCs), and a promising high efficiency up to 9.95% was achieved.
KW - anatase TiO 2
KW - low temperature
KW - organic-free
KW - perovskite solar cells
KW - plastic dye-sensitized solar cells
KW - TiO -sol 2
UR - http://www.scopus.com/inward/record.url?scp=84940875494&partnerID=8YFLogxK
U2 - 10.1021/acsami.5b05672
DO - 10.1021/acsami.5b05672
M3 - Journal article
SN - 1944-8244
VL - 7
SP - 19431
EP - 19438
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 34
ER -