TY - JOUR
T1 - Flexible Perovskite Solar Modules with Functional Layers Fully Vacuum Deposited
AU - Lei, Ting
AU - Li, Feihong
AU - Zhu, Xinyi
AU - Dong, Hua
AU - Niu, Zhiwen
AU - Ye, Siwei
AU - Zhao, Wu
AU - Xi, Jun
AU - Jiao, Bo
AU - Ding, Liming
AU - Wu, Zhaoxin
N1 - Funding Information:
T.L., F.L., and X.Z. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (Grant No. 11574248, 61505161), Scientific Research Plan Projects of Shaanxi Education Department (Grant No. 17JK0700), and Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2019JQ‐119). The SEM was performed at the International Center by Dielectric Research (ICDR), Xi'an Jiaotong University, Xi'an, China. The authors thank Miss Dai/Mr. Ma for her/his help in using the SEM. They also thank Mr. Huang and Ms. Liu at the Instrument Analysis Center of Xi'an Jiaotong University for his/her assistance with XRD and UPS testing, respectively. L.D. thanks the National Key Research and Development Program of China (2017YFA0206600) and National Natural Science Foundation of China (51773045, 21772030, 51922032 and 21961160720) for financial support.
Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2020/11
Y1 - 2020/11
N2 - Large-area homogeneous and uniform perovskite films are key to the mass production of perovskite solar cells, especially the flexible ones. Different from the solution-processed preparation, herein an all-evaporation technique is developed for both perovskite films and the hole-transporting layer in the modules. With the two-step strategy of active-layer design, homogeneous large-area perovskite films are prepared via evaporation of first PbI2 and then CH3NH3I. An 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ)-doped 4,4′,4″-tris(N-(aphthalene-2-yl)-N-phenylamino)triphenylamine (2T-NATA) hybrid hole-transporting layer is deposited on the indium-tin-oxide electrode via coevaporation. A power conversion efficiency (PCE) beyond 13% is achieved with the as-prepared flexible perovskite solar module (active area of 16.0 cm2), which exhibits both higher stability and higher efficiency than the conventional solution-processed module using poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) as the hole-transporting material. This novel strategy of all-evaporation functional layers provides a feasible way for the industrialization of flexible perovskite solar cells.
AB - Large-area homogeneous and uniform perovskite films are key to the mass production of perovskite solar cells, especially the flexible ones. Different from the solution-processed preparation, herein an all-evaporation technique is developed for both perovskite films and the hole-transporting layer in the modules. With the two-step strategy of active-layer design, homogeneous large-area perovskite films are prepared via evaporation of first PbI2 and then CH3NH3I. An 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ)-doped 4,4′,4″-tris(N-(aphthalene-2-yl)-N-phenylamino)triphenylamine (2T-NATA) hybrid hole-transporting layer is deposited on the indium-tin-oxide electrode via coevaporation. A power conversion efficiency (PCE) beyond 13% is achieved with the as-prepared flexible perovskite solar module (active area of 16.0 cm2), which exhibits both higher stability and higher efficiency than the conventional solution-processed module using poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) as the hole-transporting material. This novel strategy of all-evaporation functional layers provides a feasible way for the industrialization of flexible perovskite solar cells.
KW - flexible modules
KW - hole-transporting materials
KW - large area
KW - low-temperature processing
KW - perovskite solar cells
KW - vacuum evaporation
UR - https://www.scopus.com/pages/publications/85090306640
U2 - 10.1002/solr.202000292
DO - 10.1002/solr.202000292
M3 - Article
AN - SCOPUS:85090306640
SN - 2367-198X
VL - 4
JO - Solar RRL
JF - Solar RRL
IS - 11
M1 - 2000292
ER -