efficient polymer solar cells with alcohol-soluble zirconium(iv) isopropoxide cathode buffer layer
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2018
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Abstract
Interfacial materials are essential to the performance and stability of polymer solar cells (PSCs). Herein, solution-processed zirconium(IV) isopropoxide (Zr[OCH(CH3)2]4, ZrIPO) has been employed as an efficient cathode buffer layer between the Al cathode and photoactive layer. The ZrIPO buffer layer is prepared simply via spin-coating its isopropanol solution on the photoactive layer at room temperature without any post-treatment. When using ZrIPO/Al instead of the traditionally used Ca/Al cathode in PSCs, the short-circuit current density (Jsc) is significantly improved and the series resistance of the device is decreased. The power conversion efficiency (PCE) of the P3HT:PCBM-based device with ZrIPO buffer layer reaches 4.47% under the illumination of AM1.5G, 100 mW/cm2. A better performance with PCE of 8.07% is achieved when a low bandgap polymer PBDTBDD is selected as donor material. The results indicate that ZrIPO is a promising electron collection material as a substitute of the traditional low-work-function cathode for high performance PSCs.
| Reference Key |
luo2018energiesefficient
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|---|---|
| Authors | ;Zhen Luo;Bo Yang;Yiming Bai;Tasawar Hayat;Ahmed Alsaedi;Zhan’ao Tan |
| Journal | acs combinatorial science |
| Year | 2018 |
| DOI |
10.3390/en11020328
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| URL | |
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