TY - JOUR
T1 - All-Rounder Low-Cost Dopant-Free D-A-D Hole-Transporting Materials for Efficient Indoor and Outdoor Performance of Perovskite Solar Cells
AU - Pham, Hong Duc
AU - Jain, Sagar M.
AU - Li, Meng
AU - Wang, Zhao-Kui
AU - Manzhos, Sergei
AU - Feron, Krishna
AU - Pitchaimuthu, Sudhagar
AU - Liu, Zhiyong
AU - Motta, Nunzio
AU - Durrant, James R.
AU - Sonar, Prashant
N1 - Funding Information:
H.D.P. and S.M.J. contributed equally to this work. H.D.P. is thankful to QUT for offering the QUTPRA scholarship to conduct his research work. Some of the data reported in this paper were obtained at the Central Analytical Research Facility operated by the Institute for Future Environments (QUT). Access to CARF is supported by generous funding from the Science and Engineering Faculty (QUT). S.M.J. is thankful to the Welsh assembly Government funded S?r Cymru Solar project, the EPSRC grants EP/M025020/1 (Supergen Solar Challenge), and the Marie-Curie COFUND fellowship for financial support. S.M. is supported by the Ministry of Education of Singapore. Additionally, this project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No. 663830 and the UKRI Global Challenge Research Fund project SUNRISE (EP/P032591/1). P.S. is thankful to QUT for the financial support and to the Australian Research Council for the Future Fellowship grant FT130101337. N.M. acknowledges the support of the Queensland Government via the Q-CAS funding scheme.
Publisher Copyright:
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/4/14
Y1 - 2020/4/14
N2 - A novel biphenyl fumaronitrile as an acceptor and triphenylamine as donor conjugated building blocks are used for the first time to successfully synthesize donor–acceptor–donor molecule (D-A-D) 2,3-bis(4′-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)fumaronitrile (TPA-BPFN-TPA). The new TPA-BPFN-TPA with low-lying HOMO is used as a dopant-free hole-transporting material (HTM) in mesoporous perovskite solar cells. The performance of the solar cells using this new HTM is compared with the traditional 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)- 9,9′-spirobifluorene (Spiro-OMeTAD) HTM based devices for outdoor and indoor performance evaluation. Under 1 sun illumination, dopant-free TPA-BPFN-TPA HTM based devices exhibit a power conversion efficiency (PCE) of 18.4%, which is the record efficiency to date among D-A-D molecular design based dopant-free HTMs. Moreover, the stability of unencapsulated TPA-BPFN-TPA-based devices shows improvement over Spiro-OMeTAD-based devices in harsh relative humidity condition of 70%. Another exciting feature of the newly developed HTM is that the TPA-BPFN-TPA-based devices exhibit improved PCE of 30% and 20.1% at 1000 lux and 200 lux illuminations, respectively. This new finding provides a solution to fabricate low indoor (low light) and outdoor (1 sun) perovskite solar cell devices with high efficiency for cutting-edge energy harvesting technology.
AB - A novel biphenyl fumaronitrile as an acceptor and triphenylamine as donor conjugated building blocks are used for the first time to successfully synthesize donor–acceptor–donor molecule (D-A-D) 2,3-bis(4′-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)fumaronitrile (TPA-BPFN-TPA). The new TPA-BPFN-TPA with low-lying HOMO is used as a dopant-free hole-transporting material (HTM) in mesoporous perovskite solar cells. The performance of the solar cells using this new HTM is compared with the traditional 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)- 9,9′-spirobifluorene (Spiro-OMeTAD) HTM based devices for outdoor and indoor performance evaluation. Under 1 sun illumination, dopant-free TPA-BPFN-TPA HTM based devices exhibit a power conversion efficiency (PCE) of 18.4%, which is the record efficiency to date among D-A-D molecular design based dopant-free HTMs. Moreover, the stability of unencapsulated TPA-BPFN-TPA-based devices shows improvement over Spiro-OMeTAD-based devices in harsh relative humidity condition of 70%. Another exciting feature of the newly developed HTM is that the TPA-BPFN-TPA-based devices exhibit improved PCE of 30% and 20.1% at 1000 lux and 200 lux illuminations, respectively. This new finding provides a solution to fabricate low indoor (low light) and outdoor (1 sun) perovskite solar cell devices with high efficiency for cutting-edge energy harvesting technology.
KW - biphenyl fumaronitrile
KW - dopant-free materials
KW - perovskite solar cells
KW - triphenylamine
UR - http://www.scopus.com/inward/record.url?scp=85078066499&partnerID=8YFLogxK
U2 - 10.1002/aelm.201900884
DO - 10.1002/aelm.201900884
M3 - Article
AN - SCOPUS:85078066499
SN - 2199-160X
VL - 6
JO - Advanced Electronic Materials
JF - Advanced Electronic Materials
IS - 4
M1 - 1900884
ER -