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High-performance flexible Ag nanowire electrode with low-temperature atomic-layer-deposition fabrication of conductive-bridging ZnO film.

Duan YH, Duan Y, Chen P, Tao Y, Yang YQ, Zhao Y - Nanoscale Res Lett (2015)

Bottom Line: ZnO effectively fills in the voids of the AgNW mesh electrode, which is thus able to contact to the device all over the active area, to allow for efficient charge extraction/injection.Hole-only devices are fabricated to certify the functionality of the low-temperature ZnO film.Finally, we confirm that the ZnO film grown at a low temperature bring a significant contribution to the performance of the modified AgNW anode.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory on Integrated Optoelectronics, College of electronic science and engineering, Jilin University, 2699 Qianjin Street, Jilin, 130012 China.

ABSTRACT
As material for flexible transparent electrodes for organic photoelectric devices, the silver nanowires (AgNWs) have been widely studied. In this work, we propose a hybrid flexible anode with photopolymer substrate, which is composed of spin-coating-processed AgNW meshes and of zinc oxide (ZnO) prepared by low-temperature (60°C) atomic layer deposition. ZnO effectively fills in the voids of the AgNW mesh electrode, which is thus able to contact to the device all over the active area, to allow for efficient charge extraction/injection. Furthermore, ZnO grown by low temperature mainly relies on hole conduction to make the anode play a better role. Hole-only devices are fabricated to certify the functionality of the low-temperature ZnO film. Finally, we confirm that the ZnO film grown at a low temperature bring a significant contribution to the performance of the modified AgNW anode.

No MeSH data available.


Light transmittance of AgNW anode on photopolymer substrate before and after growing ZnO.
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Fig5: Light transmittance of AgNW anode on photopolymer substrate before and after growing ZnO.

Mentions: The sheet resistance and the light transmittance are two important factors to evaluate electrodes used as bottom-emitting devices. The light transmittance is obtained in the wavelength range of visible light. The AgNW electrodes with photopolymer before and after ZnO film growth are measured; the results are quite close (Figure 5), but a barely imperceptible disparity exists, which is presumably due to minor differences in substrate thickness in the process of spin-coating and to instrument measurement errors. The inset of Figure 5 shows photographs of transmittance test samples. There are almost no differences between them when observed with the naked eye. The sheet resistance for two kinds of electrodes with a photopolymer substrate is also shown in the inset of Figure 5. After the growth of ZnO, the conductivity of the electrode is lower due to the ZnO film being very thin. It is speculated that if ZnO films grow too thick, both the optical and the electrical properties of AgNW/ZnO hybrid anode are getting worse. After investigating the nature of the electrodes, we utilize the AgNW/ZnO hybrid anode in a hole-only device with AgNW anode as comparison. Current density-voltage characteristics are shown in Figure 6. The hole-only device with a AgNW/ZnO hybrid anode has a higher current density than the one without ZnO at the same voltage, which indicates that ZnO is effective in enhancing the hole-injection when inserted between AgNW and NPB. Therefore, the ZnO film grown by a low temperature is significant for a modified AgNW anode.Figure 5


High-performance flexible Ag nanowire electrode with low-temperature atomic-layer-deposition fabrication of conductive-bridging ZnO film.

Duan YH, Duan Y, Chen P, Tao Y, Yang YQ, Zhao Y - Nanoscale Res Lett (2015)

Light transmittance of AgNW anode on photopolymer substrate before and after growing ZnO.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385141&req=5

Fig5: Light transmittance of AgNW anode on photopolymer substrate before and after growing ZnO.
Mentions: The sheet resistance and the light transmittance are two important factors to evaluate electrodes used as bottom-emitting devices. The light transmittance is obtained in the wavelength range of visible light. The AgNW electrodes with photopolymer before and after ZnO film growth are measured; the results are quite close (Figure 5), but a barely imperceptible disparity exists, which is presumably due to minor differences in substrate thickness in the process of spin-coating and to instrument measurement errors. The inset of Figure 5 shows photographs of transmittance test samples. There are almost no differences between them when observed with the naked eye. The sheet resistance for two kinds of electrodes with a photopolymer substrate is also shown in the inset of Figure 5. After the growth of ZnO, the conductivity of the electrode is lower due to the ZnO film being very thin. It is speculated that if ZnO films grow too thick, both the optical and the electrical properties of AgNW/ZnO hybrid anode are getting worse. After investigating the nature of the electrodes, we utilize the AgNW/ZnO hybrid anode in a hole-only device with AgNW anode as comparison. Current density-voltage characteristics are shown in Figure 6. The hole-only device with a AgNW/ZnO hybrid anode has a higher current density than the one without ZnO at the same voltage, which indicates that ZnO is effective in enhancing the hole-injection when inserted between AgNW and NPB. Therefore, the ZnO film grown by a low temperature is significant for a modified AgNW anode.Figure 5

Bottom Line: ZnO effectively fills in the voids of the AgNW mesh electrode, which is thus able to contact to the device all over the active area, to allow for efficient charge extraction/injection.Hole-only devices are fabricated to certify the functionality of the low-temperature ZnO film.Finally, we confirm that the ZnO film grown at a low temperature bring a significant contribution to the performance of the modified AgNW anode.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory on Integrated Optoelectronics, College of electronic science and engineering, Jilin University, 2699 Qianjin Street, Jilin, 130012 China.

ABSTRACT
As material for flexible transparent electrodes for organic photoelectric devices, the silver nanowires (AgNWs) have been widely studied. In this work, we propose a hybrid flexible anode with photopolymer substrate, which is composed of spin-coating-processed AgNW meshes and of zinc oxide (ZnO) prepared by low-temperature (60°C) atomic layer deposition. ZnO effectively fills in the voids of the AgNW mesh electrode, which is thus able to contact to the device all over the active area, to allow for efficient charge extraction/injection. Furthermore, ZnO grown by low temperature mainly relies on hole conduction to make the anode play a better role. Hole-only devices are fabricated to certify the functionality of the low-temperature ZnO film. Finally, we confirm that the ZnO film grown at a low temperature bring a significant contribution to the performance of the modified AgNW anode.

No MeSH data available.