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- W4366117377 abstract "The photocurrent multiplication phenomena discovered in organic semiconductor films are summarized. Photocurrent multiplication in organic semiconductors was discovered following the observance of this phenomenon at the a-SiC:H/metal interface (Chap. 1 ). Photocurrent multiplication in organic films was first discovered in a vacuum-deposited n-type perylene pigment (Me-PTC) film sandwiched between two Au electrodes. The multiplication rate was more than 104-fold, that is, over 10,000 electrons flowed through the device by one irradiated photon on average. Multiplication occurs due to the tunneling injection of electrons from the negatively biased Au electrode to the Me-PTC film. This is caused by the electric field concentration at the Me-PTC/Au interface because of the accumulation of trapped holes near the Me-PTC/Au interface. For p-type quinacridone pigment films, more than 103-fold photocurrent multiplication occurs based on the opposite mechanism by the tunneling injection of holes from the positively biased metal electrode to the organic film because of the accumulation of trapped electrons near the organic/metal interface. The highest multiplication rate, at room temperature, reaching 106-fold, was observed for an n-type naphthalene derivative (naphthalene tetracarboxylic anhydride, NTCDA). Organic photocurrent multiplication is a general phenomenon in ordinal organic semiconductor films. This novel phenomenon can be utilized in a multiplication-type organic photodetector." @default.
- W4366117377 created "2023-04-19" @default.
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- W4366117377 date "2023-01-01" @default.
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- W4366117377 title "Photocurrent Multiplication in Organic Semiconductor Films" @default.
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- W4366117377 doi "https://doi.org/10.1007/978-981-99-1237-7_2" @default.
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