TY - JOUR
T1 - Durable Ultraflexible Organic Photovoltaics with Novel Metal-Oxide-Free Cathode
AU - Jiang, Zhi
AU - Fukuda, Kenjiro
AU - Huang, Wenchao
AU - Park, Sungjun
AU - Nur, Roda
AU - Nayeem, Md Osman Goni
AU - Yu, Kilho
AU - Inoue, Daishi
AU - Saito, Masahiko
AU - Kimura, Hiroki
AU - Yokota, Tomoyuki
AU - Umezu, Shinjiro
AU - Hashizume, Daisuke
AU - Osaka, Itaru
AU - Takimiya, Kazuo
AU - Someya, Takao
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant-in-Aid for Scientific Research on Innovative Areas “Science of Soft Robot” project under Grant Number JP18H05469. The authors would like to thank Dr. H. Lee and Y. Wu from the Center for Emergent Matter Science in RIKEN and H. Jin from the University of Tokyo for the fruitful discussions. Z.J. was supported by the Junior Research Associate (JRA) programme in RIKEN and a Doctoral Student Special Incentives Program: the SEUT RA programme at the Graduate School of Engineering, the University of Tokyo. The authors thank Toray Industries, Inc. for providing the PBDTTT-OFT polymer. The authors thank Mitsui Chemicals for providing the ECRIOS substrate. Z.J. and K.F. conceived the idea. Z.J. designed and conducted most of the experiments. W.H. contributed to the decay time measurement. M.O.G.N., D.I. ,and D.H. contributed with the SEM observations. S.P., R.N., and K.Y. contributed with the data analysis. H.K., T.Y., and S.U. assisted with the experiments. M.S., I.O., and K.T. performed the polymer synthesis. Z.J., K.F., and T.S. wrote the manuscript with contributions from all the authors. T.S. supervised the project.
Funding Information:
This work was supported by JSPS KAKENHI Grant-in-Aid for Scientific Research on Innovative Areas ?Science of Soft Robot? project under Grant Number JP18H05469. The authors would like to thank Dr. H. Lee and Y. Wu from the Center for Emergent Matter Science in RIKEN and H. Jin from the University of Tokyo for the fruitful discussions. Z.J. was supported by the Junior Research Associate (JRA) programme in RIKEN and a Doctoral Student Special Incentives Program: the SEUT RA programme at the Graduate School of Engineering, the University of Tokyo. The authors thank Toray Industries, Inc. for providing the PBDTTT-OFT polymer. The authors thank Mitsui Chemicals for providing the ECRIOS substrate. Z.J. and K.F. conceived the idea. Z.J. designed and conducted most of the experiments. W.H. contributed to the decay time measurement. M.O.G.N., D.I, and D.H. contributed with the SEM observations. S.P., R.N., and K.Y. contributed with the data analysis. H.K., T.Y., and S.U. assisted with the experiments. M.S., I.O., and K.T. performed the polymer synthesis. Z.J., K.F., and T.S. wrote the manuscript with contributions from all the authors. T.S. supervised the project.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/2/8
Y1 - 2019/2/8
N2 - Flexible and stretchable organic photovoltaics (OPVs) are promising as a power source for wearable devices with multifunctions ranging from sensing to locomotion. Achieving mechanical robustness and high power conversion efficiency for ultraflexible OPVs is essential for their successful application. However, it is challenging to simultaneously achieve these features by the difficulty to maintain stable performance under a microscale bending radius. Ultraflexible OPVs are proposed by employing a novel metal-oxide-free cathode that consists of a printed ultrathin metallic transparent electrode and an organic electron transport layer to achieve high electron-collecting capabilities and mechanical robustness. In fact, the proposed ultraflexible OPV achieves a power conversion efficiency of 9.7% and durability with 74% efficiency retention after 500 cycles of deformation at 37% compression through buckling. The proposed approach can be applied to active layers with different morphologies, thus suggesting its universality and potential for high-performance ultraflexible OPV devices.
AB - Flexible and stretchable organic photovoltaics (OPVs) are promising as a power source for wearable devices with multifunctions ranging from sensing to locomotion. Achieving mechanical robustness and high power conversion efficiency for ultraflexible OPVs is essential for their successful application. However, it is challenging to simultaneously achieve these features by the difficulty to maintain stable performance under a microscale bending radius. Ultraflexible OPVs are proposed by employing a novel metal-oxide-free cathode that consists of a printed ultrathin metallic transparent electrode and an organic electron transport layer to achieve high electron-collecting capabilities and mechanical robustness. In fact, the proposed ultraflexible OPV achieves a power conversion efficiency of 9.7% and durability with 74% efficiency retention after 500 cycles of deformation at 37% compression through buckling. The proposed approach can be applied to active layers with different morphologies, thus suggesting its universality and potential for high-performance ultraflexible OPV devices.
KW - extreme mechanical durability
KW - high PCE
KW - metal-oxide-free cathode
KW - ultraflexible organic photovoltaics
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U2 - 10.1002/adfm.201808378
DO - 10.1002/adfm.201808378
M3 - Article
AN - SCOPUS:85058708367
SN - 1057-9257
VL - 29
JO - Advanced Materials for Optics and Electronics
JF - Advanced Materials for Optics and Electronics
IS - 6
M1 - 1808378
ER -