All-Rounder Low-Cost Dopant-Free D-A-D Hole-Transporting Materials for Efficient Indoor and Outdoor Performance of Perovskite Solar Cells
Hong Duc Pham,Sagar M. Jain,Sagar M. Jain,Meng Li,Zhao-Kui Wang,Sergei Manzhos,Krishna Feron,Krishna Feron,Sudhagar Pitchaimuthu,Zhiyong Liu,Nunzio Motta,James R. Durrant,James R. Durrant,Prashant Sonar +13 more
TLDR
In this article, a dopant-free hole-transporting material (HTM) was used to improve the power conversion efficiency of mesoporous perovskite solar cells.Abstract:
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.read more
Citations
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Spiro[fluorene-9,90-xanthene]-basedhole transporting materials for efficient perovskite solar cells with enhancedstability
Kuan Liu(,Li-Feng-Zhu,Ming-Li Sun,Qing-Bo Meng,Bao-Yi Ren,Jia-Yu Wang,Xiao-Wei Zhan,Ling-Hai Xie,Yuehan Yao,Yan-Hong Luo +9 more
TL;DR: In this paper, four spiro-based hole transporting materials (HTMs) functionalized with four-armed arylamine moieties located at different positions are designed and synthesized.
Journal ArticleDOI
Dopant-free dicyanofluoranthene-based hole transporting material with low cost enables efficient flexible perovskite solar cells
TL;DR: In this paper, a facile synthetic route is designed to prepare two new D-A-D -type hole transporting materials (BTF5 and BTF6) with low lab synthetic costs by making dicyanofluoranthene as the key intermediate.
Journal ArticleDOI
Indoor application of emerging photovoltaics—progress, challenges and perspectives
Xueyan Hou,Yiwen Wang,Harrison Ka Hin Lee,Ram Datt,Nicolas Uslar Miano,Dong Yan,Meng Li,Fu Rong Zhu,Bo Hou,Wing C. Tsoi,Zhe Li +10 more
TL;DR: This review summarises the recent progress in the development of OPVs, PPVs and QDPVs for indoor applications, showing the rapid advances in their device performance in conjunction with highly diverse materials and device designs, including semi-transparent, flexible and large-area devices.
Journal ArticleDOI
Advancements in Organic Small Molecule Hole-Transporting Materials for Perovskite Solar Cells: Past and Future
TL;DR: In this paper , the current designs and synthetic procedures for organic small molecules as hole-transporting materials (HTMs) with a focus on their structure-property correlation, conductivity, and photovoltaic performance are discussed.
Journal ArticleDOI
Current advancements on charge selective contact interfacial layers and electrodes in flexible hybrid perovskite photovoltaics
Gopalan Saianand,Gopalan Saianand,Prashant Sonar,Gregory J. Wilson,Anantha Iyengar Gopalan,Vellaisamy A. L. Roy,Gautam E. Unni,Gautam E. Unni,Khan Mamun Reza,Behzad Bahrami,K. Venkatramanan,Qiquan Qiao +11 more
TL;DR: In this paper, the authors focus on the current developments and latest progress achieved in perovskite photovoltaics concerning the charge selective transport layers/electrodes toward the fabrication of highly stable, efficient flexible devices.
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