XUE Zhan, TIAN Feng-shou, WANG Qing-he etc. Oxygen Sensing Characteristics of Donor-acceptor Conjugated Polymer Transistors of Organic Semiconductor Film[J]. Chinese Journal of Luminescence, 2018,39(8): 1136-1142
XUE Zhan, TIAN Feng-shou, WANG Qing-he etc. Oxygen Sensing Characteristics of Donor-acceptor Conjugated Polymer Transistors of Organic Semiconductor Film[J]. Chinese Journal of Luminescence, 2018,39(8): 1136-1142 DOI: 10.3788/fgxb20183908.1136.
Oxygen Sensing Characteristics of Donor-acceptor Conjugated Polymer Transistors of Organic Semiconductor Film
The oxygen sensing transistor characteristics of a conjugated polymer based on bis(2-oxoindolin-3-ylidene)-benzodifuran-dione and bithiophene (PBIBDF-BT) were investigated. The devices depicted both hole-and electron-carriers transport sensing properties in different oxygen atmospheres
where characteristics like drain current
mobility(
) and subthreshold swing(SS) were tuned through the absorption/desorption processes of oxygen into the semiconductor layers. Experimental results indicate that the drain current
and SS based on the PBIBDF-BT polymer TFTs changed by -52.7%
-51.3% and 48% for P-channel
while changed by 42.3%
59.5% and -39% for N-channel as the vacuum from 0.7 Pa (oxygen volumn fraction~5.310
-6
) to 0.08 Pa (oxygen volumn fraction~610
-7
). As the oxygen volumn fraction decreases from~810
-7
to~610
-7
the drain current of P-channel and N-channel increased by -45.9% and 31.1%
respectively. PBIBDF-BT polymer TFTs show bipolar detection of oxygen
and has a low oxygen detection line.
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references
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