The Influence of UV Light on Performance of Poly(methyl Methacrylate) in Regard to Dye-Sensitised Solar Cells

2019 ◽  
Vol 24 (1) ◽  
pp. 127-136 ◽  
Author(s):  
Kazimierz Darowicki ◽  
Michał Szociński ◽  
Katarzyna Schaefer ◽  
Douglas J. Mills
2013 ◽  
Vol 14 (11) ◽  
pp. 3131-3137 ◽  
Author(s):  
Chih-Hung Tsai ◽  
Chun-Yang Lu ◽  
Ming-Che Chen ◽  
Tsung-Wei Huang ◽  
Chung-Chih Wu ◽  
...  

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 527 ◽  
Author(s):  
Hea-Lim Park ◽  
Min-Hoi Kim ◽  
Hyeok Kim

In this study, we developed polymer gate insulator-based organic phototransistors (p-OPTs) with improved optical switching properties by using a hybrid gate insulator configuration. The hybrid gate insulator of our p-OPT has a photoresponsive layer made of poly(4-vinylphenol) (PVP), which enhances the photoresponse, and an interfacial layer of poly(methyl methacrylate) for reliable optical switching of the device. Our hybrid gate insulator-equipped p-OPT exhibits well-defined optical switching characteristics because no specific type of charge is significantly trapped at an interfacial layer/organic semiconductor (OSC) interface. Moreover, our device is more photoresponsive than the conventional p-OPT (here, an OPT with a single-polymer poly(methyl methacrylate) (PMMA) gate insulator), because the characteristic ultraviolet (UV) absorption of the PVP polymer allows the photoresponsive layer and OSC to contribute to the generation of charge carriers when exposed to UV light.


2020 ◽  
Vol 59 (23) ◽  
pp. 11063-11071 ◽  
Author(s):  
Anurag Roy ◽  
Aritra Ghosh ◽  
Shubhranshu Bhandari ◽  
Senthilarasu Sundaram ◽  
Tapas Kumar Mallick

2016 ◽  
Vol 4 (16) ◽  
pp. 3640-3645 ◽  
Author(s):  
Kenichi Hayashida ◽  
Yasuhiro Takatani

Theεr′ of PMMA-grafted ZnO nanoparticles was greatly enhanced by irradiation of UV light owing to Maxwell–Wagner polarization of the resultant free electrons.


2021 ◽  
Vol 28 (8) ◽  
Author(s):  
Jiaojiao Yang ◽  
Junxin Wang ◽  
Maria Strømme ◽  
Ken Welch

AbstractA simple solution casting approach was used to obtain transparent and flexible poly(methyl methacrylate) (PMMA) films incorporated with 1 – 4% by weight amorphous magnesium carbonate nanoparticles. Optical transparency was retained in visible wavelengths, while transmittance in the UV-B region was reduced by 22% at 310 nm and 58% at 256 nm with the addition of 4 wt. % nanoparticles. Furthermore, the incorporation of the nanoparticles was shown to provide protection for the films under UV-C irradiation (254 nm wavelength, 5 mW cm−2), with the amount of UV degradation decreasing with increasing concentration of nanoparticles. Films with incorporated nanoparticles were also shown to be able to retain adsorbed moisture much better than neat PMMA films; whereas neat PMMA films did not retain moisture, approximately 50% of the adsorbed moisture was retained in films containing 4 wt. % nanoparticles. These enhanced properties of PMMA are of great interest in applications such as flexible and transparent screens for personal electronic devices that require protection from both UV light and moisture.


2013 ◽  
Vol 468 ◽  
pp. 79-82
Author(s):  
Jing Jing Liu ◽  
Hong Jing Jia ◽  
Shou Zhi Pu

A novel photochromic diarylethene with a six-membered pyrimidine was synthesized to investigate its photochromic behaviors. This compound exhibited reversible photochromism, changing from colorless to red after irradiation with UV light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Moreover, it exhibited remarkable fluorescence switching in solution. The results indicated that the pyrimidine moiety played a very important role during the process of photochromic reaction for the diarylethene derivative.


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