TY - JOUR
T1 - Improvement in inverted polymer solar cells via 1-benzoyl-2-thiourea as surface modifier on sol-gel ZnO
AU - Ou, Ren Xiu
AU - Lin, Chen Hsueh
AU - Guo, Tzung Fang
AU - Wen, Ten Chin
N1 - Funding Information:
We are grateful for the financial support from the Ministry of Science and Technology of Taiwan under grants MOST 105-2221-E-006-253- MY3 . The assistance of Dr. Yao-Jane Hsu form National Synchrotron Radiation Research Center for XPS and UPS data is acknowledged.
Publisher Copyright:
© 2018
PY - 2019/3
Y1 - 2019/3
N2 - Inverted polymer solar cells (PSCs) were demonstrated to improve the performance using 1-Benzoyl-2-thiourea (BT) as surface modifier on sol-gel ZnO. X-ray photoelectron spectroscopic (XPS) results showed the formation of N-Zn bonding and the reduced oxygen vacancies (V o ), indicating BT chemisorbed on V o sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the BT modified ZnO (ZnO/BT) showed decreased work function (WF) due to the interfacial dipole, enhancing the electron transportation. Besides, the phenyl group of BT provided the hydrophobic surface not only good contact with organic active layer but also a good prevention of moisture, improving the interfacial compatibility and long-term stability. Accordingly, PSCs with ZnO/BT possessed 9.16% of power conversion efficiency (PCE) higher than 8.16% of the pristine ZnO.
AB - Inverted polymer solar cells (PSCs) were demonstrated to improve the performance using 1-Benzoyl-2-thiourea (BT) as surface modifier on sol-gel ZnO. X-ray photoelectron spectroscopic (XPS) results showed the formation of N-Zn bonding and the reduced oxygen vacancies (V o ), indicating BT chemisorbed on V o sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the BT modified ZnO (ZnO/BT) showed decreased work function (WF) due to the interfacial dipole, enhancing the electron transportation. Besides, the phenyl group of BT provided the hydrophobic surface not only good contact with organic active layer but also a good prevention of moisture, improving the interfacial compatibility and long-term stability. Accordingly, PSCs with ZnO/BT possessed 9.16% of power conversion efficiency (PCE) higher than 8.16% of the pristine ZnO.
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U2 - 10.1016/j.jtice.2018.10.017
DO - 10.1016/j.jtice.2018.10.017
M3 - Article
AN - SCOPUS:85055561585
SN - 1876-1070
VL - 96
SP - 131
EP - 136
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -