Limits...
AlGaInP LED with low-speed spin-coating silver nanowires as transparent conductive layer.

Guo X, Guo CW, Wang C, Li C, Sun XM - Nanoscale Res Lett (2014)

Bottom Line: The low-speed spin-coating method was developed to prepare uniform and interconnected silver nanowires (AgNWs) film with the transmittance of 95% and sheet resistance of 20Ω/sq on glass, which was comparable to ITO.The fitting value of σ dc/σ op of 299.3 was attributed to the spin-coating process.Advantages of this solution-processed AgNW film on AlGaInP light-emitting diodes (LEDs) as transparent conductive layer were explored.

View Article: PubMed Central - PubMed

Affiliation: Photonic Research Lab, Beijing University of Technology, Beijing, 100124, People's Republic of China, guo@bjut.edu.cn.

ABSTRACT
The low-speed spin-coating method was developed to prepare uniform and interconnected silver nanowires (AgNWs) film with the transmittance of 95% and sheet resistance of 20Ω/sq on glass, which was comparable to ITO. The fitting value of σ dc/σ op of 299.3 was attributed to the spin-coating process. Advantages of this solution-processed AgNW film on AlGaInP light-emitting diodes (LEDs) as transparent conductive layer were explored. The optical output power enhanced 100%, and the wavelength redshift decreased from 12 to 3 nm, which indicated the AgNW films prepared by low-speed spin-coating possessed attractive features for large-scale TCL applications in optoelectronic devices.

No MeSH data available.


Related in: MedlinePlus

Optical and electrical performance of AgNW film on glass. (a) Spectral transmittance at 550 nm as a function of sheet resistance for AgNW films on glass with different concentrations by spin- and drop-coating processes. The fitting curve according to Equation 1 fits the data prepared by spin-coating process well. In each case, the transmittance was evaluated with the bare glass as a reference. (b) Spectral transmittance results of AgNW films prepared by spin-coating at 270 rpm with AgNW concentrations from 0.25 to 3.5 mg/ml.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4493991&req=5

Fig2: Optical and electrical performance of AgNW film on glass. (a) Spectral transmittance at 550 nm as a function of sheet resistance for AgNW films on glass with different concentrations by spin- and drop-coating processes. The fitting curve according to Equation 1 fits the data prepared by spin-coating process well. In each case, the transmittance was evaluated with the bare glass as a reference. (b) Spectral transmittance results of AgNW films prepared by spin-coating at 270 rpm with AgNW concentrations from 0.25 to 3.5 mg/ml.

Mentions: Figure 1a presented the scanning electron microscopy (SEM) images of AgNW films on glass prepared by spin-coating, which was the mostly commonly used in preparing photoresist with large scale in the field of integrated circuits. The concentrations of AgNW solution were 0.5, 1.5, and 2.5 mg/ml, respectively. The rotation speed was closely related with the FoM and was optimized to be 270 rpm, which was far lower than that in the photolithography process due to the poor adhesion of wires to the substrate. From the SEM images, the typical diameter and length of the AgNWs can be measured about 40 nm and 30–50 μm, respectively. But most importantly, the wires connected were with each other and uniformly distributed, which guaranteed low resistance of the AgNW film. Figure 2b showed the corresponding microscopic photographs with magnification of × 1,000, which also displayed the uniform distribution of the AgNW films. By increasing the AgNW concentrations, the AgNW area coverage increased. For the concentration of 2.5 mg/ml, it is hard to find the bare space of substrate under the microscope, which indicated low transmittance.Figure 1


AlGaInP LED with low-speed spin-coating silver nanowires as transparent conductive layer.

Guo X, Guo CW, Wang C, Li C, Sun XM - Nanoscale Res Lett (2014)

Optical and electrical performance of AgNW film on glass. (a) Spectral transmittance at 550 nm as a function of sheet resistance for AgNW films on glass with different concentrations by spin- and drop-coating processes. The fitting curve according to Equation 1 fits the data prepared by spin-coating process well. In each case, the transmittance was evaluated with the bare glass as a reference. (b) Spectral transmittance results of AgNW films prepared by spin-coating at 270 rpm with AgNW concentrations from 0.25 to 3.5 mg/ml.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493991&req=5

Fig2: Optical and electrical performance of AgNW film on glass. (a) Spectral transmittance at 550 nm as a function of sheet resistance for AgNW films on glass with different concentrations by spin- and drop-coating processes. The fitting curve according to Equation 1 fits the data prepared by spin-coating process well. In each case, the transmittance was evaluated with the bare glass as a reference. (b) Spectral transmittance results of AgNW films prepared by spin-coating at 270 rpm with AgNW concentrations from 0.25 to 3.5 mg/ml.
Mentions: Figure 1a presented the scanning electron microscopy (SEM) images of AgNW films on glass prepared by spin-coating, which was the mostly commonly used in preparing photoresist with large scale in the field of integrated circuits. The concentrations of AgNW solution were 0.5, 1.5, and 2.5 mg/ml, respectively. The rotation speed was closely related with the FoM and was optimized to be 270 rpm, which was far lower than that in the photolithography process due to the poor adhesion of wires to the substrate. From the SEM images, the typical diameter and length of the AgNWs can be measured about 40 nm and 30–50 μm, respectively. But most importantly, the wires connected were with each other and uniformly distributed, which guaranteed low resistance of the AgNW film. Figure 2b showed the corresponding microscopic photographs with magnification of × 1,000, which also displayed the uniform distribution of the AgNW films. By increasing the AgNW concentrations, the AgNW area coverage increased. For the concentration of 2.5 mg/ml, it is hard to find the bare space of substrate under the microscope, which indicated low transmittance.Figure 1

Bottom Line: The low-speed spin-coating method was developed to prepare uniform and interconnected silver nanowires (AgNWs) film with the transmittance of 95% and sheet resistance of 20Ω/sq on glass, which was comparable to ITO.The fitting value of σ dc/σ op of 299.3 was attributed to the spin-coating process.Advantages of this solution-processed AgNW film on AlGaInP light-emitting diodes (LEDs) as transparent conductive layer were explored.

View Article: PubMed Central - PubMed

Affiliation: Photonic Research Lab, Beijing University of Technology, Beijing, 100124, People's Republic of China, guo@bjut.edu.cn.

ABSTRACT
The low-speed spin-coating method was developed to prepare uniform and interconnected silver nanowires (AgNWs) film with the transmittance of 95% and sheet resistance of 20Ω/sq on glass, which was comparable to ITO. The fitting value of σ dc/σ op of 299.3 was attributed to the spin-coating process. Advantages of this solution-processed AgNW film on AlGaInP light-emitting diodes (LEDs) as transparent conductive layer were explored. The optical output power enhanced 100%, and the wavelength redshift decreased from 12 to 3 nm, which indicated the AgNW films prepared by low-speed spin-coating possessed attractive features for large-scale TCL applications in optoelectronic devices.

No MeSH data available.


Related in: MedlinePlus