Efficiency Enhancement of Inverted Polymer Solar Cells Using ZnO as Electron Selective Layer

Efficiency Enhancement of Inverted Polymer Solar Cells Using ZnO as Electron Selective Layer

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Zhu et al. has demonstrated that by using ionic liquid-functionalized carbon nanoparticles-modified ZnO as electron selective layer, the efficiency of inverted polymer solar cells can be obviously enhanced.

In their research, ZnO electron selective layer was deposited onto ITO-coated glass by magnetron sputtering technique without adding substrate temperature. Ionic liquid-functionalized carbon nanoparticles (ILCNs) film was further deposited onto ZnO surfaces by drop-casting ILCNs solution to improve interface properties. The power conversion efficiency (PCE) of inverted polymer solar cells (PSCs)with only ZnO layer was quickly decreased from 2.7 to 2.2% when the thickness of ZnO layer was increased from 15 nm to 60 nm. The average PCE of inverted PSCs with ZnO layer modified withILCNs only decreased from 3.5 to 3.4%, which is comparable to that of traditional PSCs with poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) anode buffer layer.Besides, the range of sputtering condition and thickness of ZnO layer were significantly extended for PSCs after modified with ILCNs film.

Original article citation

Feng Zhu, Xiaohong Chen, Zhe Lu, Jiaxiang Yang, Sumei Huang, Zhuo Sun, “Efficiency Enhancement of Inverted Polymer Solar Cells Using Ionic Liquid-functionalized Carbon Nanoparticles-modified ZnO as Electron Selective Layer”, Nano-Micro Lett. 6(1), 24-29 (2014). http://dx.doi.org/10.5101/nml.v6i1.p24-29

A Highlight from Dan Dong for NMSTR.

 

 

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