All‐Rounder Low‐Cost Dopant‐Free D‐A‐D Hole‐Transporting Materials for Efficient Indoor and Outdoor Performance of Perovskite Solar Cells,Advanced Electronic Materials

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All‐Rounder Low‐Cost Dopant‐Free D‐A‐D Hole‐Transporting Materials for Efficient Indoor and Outdoor Performance of Perovskite Solar Cells
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2020-01-15 , DOI: 10.1002/aelm.201900884
Hong Duc Pham ₁ , Sagar M. Jain _{2,

3} , Meng Li ₄ , Zhao‐Kui Wang ₄ , Sergei Manzhos ₅ , Krishna Feron _{6,

7} , Sudhagar Pitchaimuthu ₃ , Zhiyong Liu ₈ , Nunzio Motta ₁ , James R. Durrant _{3,

9} , Prashant Sonar ₁

Affiliation

Institute of Future Environment and School of Chemistry, Physics and Mechanical EngineeringQueensland University of Technology (QUT) 2 George Street Brisbane Queensland 4001 Australia
Advanced Materials Centre, School of EngineeringLondon South Bank University 103, Borough Road London SE10AA UK
College of EngineeringSwansea University Bay Campus Fabian Way Swansea SA1 8EN UK
Jiangsu Key Laboratory for Carbon‐Based Functional Materials and DevicesInstitute of Functional Nano and Soft Materials (FUNSOM)Soochow University Suzhou 215123 China
Department of Mechanical EngineeringFaculty of EngineeringNational University of Singapore Block EA #07‐08, 9 Engineering Drive 1 Singapore 117576 Singapore
CSIRO Energy Centre New South Wales Newcastle 2304 Australia
Centre for Organic ElectronicsUniversity of Newcastle Callaghan New South Wales 2308 Australia
Department of Physics and Materials ScienceHenan Key Laboratory of Photovoltaic MaterialsHenan Normal University Xinxiang 453007 China
Department of Chemistry and Centre for Plastic ElectronicsImperial College London Exhibition Road London SW7 2AZ UK

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.

中文翻译：

全方位钙钛矿型低成本无掺杂D-A-D空穴传输材料，可有效提高室内和室外钙钛矿型太阳能电池的性能

首次使用新型联苯富马腈作为受体，三苯胺作为供体共轭结构单元，成功地合成了供体-受体-供体分子（D-A-D）2,3-bis（4'-（bis（4-甲氧基苯基）氨基）-[1,1'-联苯] -4-基）富马腈（TPA-BPFN-TPA）。具有低HOMO的新型TPA-BPFN-TPA用作介孔钙钛矿太阳能电池中的无掺杂空穴传输材料（HTM）。使用这种新型HTM的太阳能电池的性能与传统的2,2'，7,7'-tetrakis（N，N基于HTM的'-二-对甲氧基苯基氨基）-9,9'-螺二芴（Spiro-OMeTAD）设备用于室外和室内性能评估。在1种阳光照射下，基于无掺杂剂的TPA-BPFN-TPA HTM器件的功率转换效率（PCE）为18.4％，这是迄今为止基于D-A-D分子设计的基于无掺杂剂的HTM的创纪录效率。此外，在70％的相对湿度条件下，未封装的基于TPA-BPFN-TPA的设备的稳定性优于基于Spiro-OMeTAD的设备。新开发的HTM的另一个令人兴奋的功能是，基于TPA-BPFN-TPA的设备在1000 lux和200 lux照明下的PCE分别提高了30％和20.1％。

更新日期：2020-01-15

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