Highly sensitive thin film phototransistors based on a copolymer of benzodithiophene and diketopyrrolopyrrole

2015 ◽  
Vol 3 (9) ◽  
pp. 1942-1948 ◽  
Author(s):  
Lanchao Ma ◽  
Zhengran Yi ◽  
Shuai Wang ◽  
Yunqi Liu ◽  
Xiaowei Zhan
Keyword(s):  
Thin Film ◽  
Light Intensity ◽  
White Light ◽  
Dark Current ◽  
Light Irradiation ◽  
Low Light ◽  
Current Ratio ◽  
Low Light Intensity ◽  
Highly Sensitive

Thin film phototransistors based on a D–A copolymer of P(DPP4T-co-BDT) exhibited a photoresponsivity of up to 4.0 × 103 A W−1 and a photocurrent/dark-current ratio of 6.8 × 105 under white light irradiation with a low light intensity (9.7 μW cm−2).

Investigation of low intensity light performances of kesterite CZTSe, CZTSSe, and CZTS thin film solar cells for indoor applications

2020 ◽  
Vol 8 (29) ◽  
pp. 14538-14544 ◽  
Author(s):  
Jongsung Park ◽  
Hyesun Yoo ◽  
Vijay Karade ◽  
Kuldeep Singh Gour ◽  
Eunyoung Choi ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Intensity ◽  
Thin Film Solar Cells ◽  
Czts Thin Film ◽  
Low Light ◽  
Low Intensity ◽  
Intensity Measurements ◽  
Low Light Intensity

Three kesterite thin-film solar cells, Cu2ZnSnSe4 (CZTSe), Cu2ZnSn(S,Se)4 (CZTSSe), and Cu2ZnSnS4 (CZTS), and based on low light intensity measurements, examined the possibility of using kesterite devices for indoor applications.

scholarly journals Response of Photosynthesis and Chlorophyll Fluorescence Parameters of Castanopsis kawakamii Seedlings to Forest Gaps

Forests ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 21
Author(s):  
Zhong-sheng He ◽  
Rong Tang ◽  
Meng-jia Li ◽  
Meng-ran Jin ◽  
Cong Xin ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Light Intensity ◽  
Seedling Growth ◽  
Group Treatment ◽  
Control Group ◽  
Low Light ◽  
Chlorophyll Fluorescence Parameters ◽  
Forest Gaps ◽  
Low Light Intensity ◽  
Weak Light

Light is a major environmental factor limiting the growth and survival of plants. The heterogeneity of the light environment after gap formation in forest influences the leaf chlorophyll contents, net photosynthetic rate (Pn), and chlorophyll fluorescence, thus influencing the growth and regeneration of Castanopsis kawakamii seedlings. The aim of this study was to explore the effects of weak light on the photosynthetic physiology of C. kawakamii seedlings in forest gaps and non-gaps. The results showed that (1) the contents of chlorophyll a (Chl-a), chlorophyll b (Chl-b), and total chlorophyll (Chl-T) in forest gaps were lower than in non-gaps. Seedlings tended to increase chlorophyll content to absorb light energy to adapt to low light intensity in non-gap environments. (2) The Pn values of C. kawakamii seedlings in forest gaps were significantly higher than in non-gaps, and forest gaps could improve the seedlings’ photosynthetic capacity. (3) The C. kawakamii seedlings in forest gaps were more sensitive to weak light and control group treatment, especially the tall seedlings, indicating that seedlings require more light to satisfy their growth needs in the winter. The seedlings in non-gaps demonstrated better adaptability to low light intensity. The light intensity was not adequate in weak light conditions and limited seedling growth. We suggest that partial forest selection cutting could improve light intensity in non-gaps, thus promoting seedling growth and regeneration of C. kawakamii more effectively in this forest.

scholarly journals The Effect of Low Light Intensity on the Early Development of Radish Hypocotyl

1983 ◽  
Vol 51 (4) ◽  
pp. 421-426 ◽  
Author(s):  
Yasuyoshi HAYATA ◽  
Yutaka SHINOHARA ◽  
Yoshio SUZUKI
Keyword(s):  
Light Intensity ◽  
Early Development ◽  
Low Light ◽  
Low Light Intensity
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