High‐Performance Thermally Stable Organic Phototransistors Based on PSeTPTI/PC₆₁BM for Visible and Ultraviolet Photodetection

Ultrathin Air-Stable n-Type Organic Phototransistor Array for Conformal Optoelectronics

“…Among versatile organic optoelectronic devices, organic phototransistor (OPT) is very appealing because of its outstanding advantage in the combination of light detection, light switching and signal magnification in a single device 8–12 . Compared with photodiode, the phototransistor typically has higher photosensitivity and lower noise current owing to the presence of an additional gate electrode for amplified photogenerated electrical signals 13–17 .…”

Solution‐Processed Ultrathin Organic Semiconductor Film: Toward All‐Transparent Highly Stable Transistors

“…[27][28][29] With lowering the solution concentration and increasing the rotation speed, the thickness can be below 10 nm with transmittance above 95%. Top-gate transistors with Au-Ag electrodes are constructed to evaluate the quality of the ultrathin fi lm.…”

“…In this Communication, we fabricate ultrathin fi lm of a donor semiconductor named poly{2,5-selenophene-alt-2,8-(4,10bis(2-hexyldecyl))thieno[2′,3′:5,6]pyrido [3,4-g]thieno [3,2-c]isoquinoline-5,11(4H,10H)-dione} (PSeTPTI) by spin coating. [27][28][29] With lowering the solution concentration and increasing the rotation speed, the thickness can be below 10 nm with transmittance above 95%. Top-gate transistors with Au-Ag electrodes are constructed to evaluate the quality of the ultrathin fi lm.…”

“…[ 27 ] It has the following characteristics which can be used to make transparent ultrathin fi lm: (1) With selenophene instead of thiophene unit, the enhanced planarity and extended conjugation length make the polymer fi t for hole transport with excellent electrical stability and air stability. [ 29,30 ] Thus it may have the potential to resist O 2 and H 2 O when the fi lm becomes ultrathin. (2) There are no obvious crystalline regions with clear grain boundaries such as terrace or fi bre morphology in the microstructure.…”

“…(2) There are no obvious crystalline regions with clear grain boundaries such as terrace or fi bre morphology in the microstructure. [ 29 ] Thus discontinuity like cracks and voids may be avoided in the ultrathin fi lm. By spin-coating low-concentration solution of the material with high rotating speed, continuous and uniform ultrathin fi lm is expected to form (Figure 1 c).…”