Cooperation of Photosynthetic Reaction Center of Photosystem II under Weak Light as Shown by Light Intensity-dependence of the Half-effective Dose of Atrazine

1995 ◽  
Vol 59 (5) ◽  
pp. 796-800 ◽  
Author(s):  
Masaaki Takahashi ◽  
Masayoshi Takano ◽  
Takuo Shiraishi ◽  
Kozi Asada ◽  
Yorinao Inoue
Keyword(s):  
Photosystem Ii ◽  
Light Intensity ◽  
Effective Dose ◽  
Reaction Center ◽  
Photosynthetic Reaction Center ◽  
Intensity Dependence ◽  
Weak Light

Light-Intensity Dependence of the Staebler-Wronski Effect in a-Si:H with Various Densities of Defects

2005 ◽  
Vol 862 ◽  
Author(s):  
Minoru Kumeda ◽  
Ryohei Sakai ◽  
Akiharu Morimoto ◽  
Tatsuo Shimizu
Keyword(s):  
Light Intensity ◽  
Weak Dependence ◽  
Rate Equations ◽  
Dangling Bonds ◽  
Illumination Time ◽  
Intensity Dependence ◽  
Weak Light ◽  
Staebler Wronski Effect

AbstractThe light-intensity dependence of the photocreation of dangling bonds (DBs) were investigated for a-Si:H films with increasing density of defects before light soaking. Samples in which the density of neutral DBs had been increased by annealing at 400 C for 1 h exhibited a weak light-intensity dependence of the photocreated DBs compared to that for the as-deposited sample. Furthermore, the sample which had been illuminated with a light intensity of 1 W/cm2 for 1 h also showed a weak dependence. The results can be qualitatively explained by using rate equations for the densities of DBs and floating bonds (FBs) based on the FB-mediated photocreation of DBs. When both the densities of DBs and FBs before illumination increase, the light-intensity dependence of the DB density for a moderate value of the illumination time becomes weaker, qualitatively consistent with the observed results.

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