TY - JOUR
T1 - The beneficial effects of mixing spiro-OMeTAD with n-butyl-substituted copper phthalocyanine for perovskite solar cells
AU - Nouri, Esmaiel
AU - Wang, Yu Long
AU - Chen, Qian
AU - Xu, Jia Ju
AU - Dracopoulos, Vassilios
AU - Sygellou, Lamprini
AU - Xu, Zong Xiang
AU - Mohammadi, Mohammad Reza
AU - Lianos, Panagiotis
PY - 2016/12/20
Y1 - 2016/12/20
N2 - Perovskite solar cells have been constructed under ambient conditions by using 2,2',7,7'-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (spiro-OMeTAD) mixed with a small quantity of soluble tetra-n-butyl substituted copper phthalocyanine as hole transporting material. The introduction of the phthalocyanine derivative resulted in an impressive increase of cell efficiency, which changed from 10.4% in the absence to 15.4% in the presence of phthalocyanine. This effect is related to the creation of deep traps in the hole transporting phase which block back-travelling electrons as well as to the improvement of the structural quality of the spiro-OMeTAD film in the presence of phthalocyanine. Both functionalities decrease shunt paths within the hole transporting phase resulting in increasing the fill factor and the open-circuit voltage of the cell.
AB - Perovskite solar cells have been constructed under ambient conditions by using 2,2',7,7'-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (spiro-OMeTAD) mixed with a small quantity of soluble tetra-n-butyl substituted copper phthalocyanine as hole transporting material. The introduction of the phthalocyanine derivative resulted in an impressive increase of cell efficiency, which changed from 10.4% in the absence to 15.4% in the presence of phthalocyanine. This effect is related to the creation of deep traps in the hole transporting phase which block back-travelling electrons as well as to the improvement of the structural quality of the spiro-OMeTAD film in the presence of phthalocyanine. Both functionalities decrease shunt paths within the hole transporting phase resulting in increasing the fill factor and the open-circuit voltage of the cell.
KW - hole transporting material
KW - Perovskite solar cells
KW - soluble copper phthalocyanine
KW - spiro-OMeTAD
UR - http://www.scopus.com/inward/record.url?scp=85011055798&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2016.11.119
DO - 10.1016/j.electacta.2016.11.119
M3 - Article
AN - SCOPUS:85011055798
SN - 0013-4686
VL - 222
SP - 1417
EP - 1423
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -