The beneficial effects of mixing spiro-OMeTAD with n-butyl-substituted copper phthalocyanine for perovskite solar cells

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 - https://www.scopus.com/pages/publications/85011055798

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 -