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Highly responsive graphene phototransistor for visible light enhanced by poly(3-hexylthiophene)
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A low-cost phototransistor using poly(3-hexylthiophene) (P3HT) and a graphene hybrid channel was fabricated by a solution-processing method, which exhibited excellent optoelectronic properties due to the combination of superior light absorption of P3HT and high charge mobility of graphene. The phototransistor exhibited a high hole mobility of up to 18 cm2 V−1 s−1. The device showed a sensitive and stable response in the visible light range with a responsivity (R) of 18 A/W and a short rise/decay response time of 2.2/2.3 ms. These excellent performances were benefited from the fast carrier transfer from P3HT to graphene and the high mobility of graphene. The P3HT-graphene hybrid phototransistor provides an excellent opportunity for developing high performance optoelectronic devices.
Title: Highly responsive graphene phototransistor for visible light enhanced by poly(3-hexylthiophene)
Description:
A low-cost phototransistor using poly(3-hexylthiophene) (P3HT) and a graphene hybrid channel was fabricated by a solution-processing method, which exhibited excellent optoelectronic properties due to the combination of superior light absorption of P3HT and high charge mobility of graphene.
The phototransistor exhibited a high hole mobility of up to 18 cm2 V−1 s−1.
The device showed a sensitive and stable response in the visible light range with a responsivity (R) of 18 A/W and a short rise/decay response time of 2.
2/2.
3 ms.
These excellent performances were benefited from the fast carrier transfer from P3HT to graphene and the high mobility of graphene.
The P3HT-graphene hybrid phototransistor provides an excellent opportunity for developing high performance optoelectronic devices.
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