Photostability of Organic Field-Effect Transistors

Fluctuation in channel current in the organic field-effect transistors (OFETs) under illumination, caused by the photoresponse of the polymer channel layer, is one of the critical factors influencing the operational stability of the OFET-based backplane. In this work, a mechanistic study of the photostability of the OFETs was carried out. A sample front-end driving circuit, comprising an OFET and an organic light-emitting diode unit, was used to analyze the photostability of the OFET under the illumination of near-infrared (850 nm) light, which corresponds to the peak absorption of the polymer channel layer. The results reveal that photostable OFETs with a negligible change in the channel current and the threshold voltage can be realized by mitigating the defect-associated charge trapping and detrapping processes under illumination, enabled by improved molecular packing in the polymer channel layer. The outcomes of this work provide important insight and OFET design knowledge for a plethora of applications in front-end circuits, image sensors, and flexible displays

Effects of minocycline, risperidone and combination of these two supplementation and LPS treatment on open-field task.

<p>NS represents no significance. The data is shown as means ± SEM. n = 8 for each group.</p

Comparison of number of Iba1-immunopositive cells in VH (A), Cx (B) and Th (C) among different groups.

<p>The data is shown as means ± SEM. n = 4 for each group. ** P<0.01, compared with saline-injected group; # P<0.01, compared with LPS-injected group.</p

Highly Efficient and Air Stable Inverted Polymer Solar Cells Using LiF-Modified ITO Cathode and MoO₃/AgAl Alloy Anode

The performance and air stability of inverted polymer solar cells (PSCs) were greatly improved using a combination of LiF-modified ITO cathode and a MoO₃/AgAl alloy anode. The power conversion efficiency (PCE) of PSCs with AgAl contact reached 9.4%, which is higher than that of the cells with Ag (8.8%) and Al electrode (7.6%). The PCE of AgAl-based PSCs can further increase up to 10.3% through incorporating an ultrathin LiF-modified ITO. AgAl-based cells also exhibit a superior stability compared to the cells with Ag and Al contacts. PCE of the AgAl-based cells without encapsulation remains 78% of its original value after the cells were aged for 380 days in air. The presence of a LiF-modified ZnO interlayer between ITO and the organic active layer improves the charge collection. The improvement in PCE and stability of the AgAl-based cells is primarily attributed to the formation of AlO_<i>x</i> at the MoO₃/AgAl interface, preventing Ag diffusion and improving the built-in potential across the active layer in the cells

Effects of minocycline, risperidone and combination of these two on LPS-induced social interaction behaviors shown by number of contact (Figure 3A) and time spent in contact (Figure 3B).

<p>The data are shown as means ± SEM. n  =  8 for each group. ** P<0.01, compared with saline-injected group; # P<0.01, compared with LPS-injected group.</p

The timeline of treatment, behavioral testing and IHC.

<p>The timeline of treatment, behavioral testing and IHC.</p

Iba1-immunopositive cells in VH, Cx and Th of saline- and LPS-injected rats.

<p>A small number of Iba1-immunopositive cells are present in VH, Cx and Th of rats received neonatal intrahippocampal injection of saline (A) and the saline-injected rats treated with minocycline (B), risperidone (C) or both of them (D). On the other hand, a large of number of Iba1-immunopositive cells are observed in VH, Cx and Th of the rats received neonatal intrahippocampal injection of LPS (E), but it is dramatically reduced after intragastric administration of minocycline (F), risperidone (G) or both of them (H). A'–H' are high magnification of the ventral hippocampus in A–H, respectively. Cx, cerebral cortex; Th, thalamus; VH, ventral hippocampus. Scale bars  = 200 μm in H (applied from A–G) and 20 μm in H' (applied for A'–G').</p

Effects of minocycline,risperidone, minocycline combination with risperidone on LPS-induced PPI deficits in rats.

<p>The data is shown as means ± SEM. n = 8 for each group. ** P<0.01. compared with saline-injected group; # P<0.01,compared with LPS-injected group.</p

Solution-Processable ZnO/Carbon Quantum Dots Electron Extraction Layer for Highly Efficient Polymer Solar Cells

In this work, we report the effort to develop high-efficiency inverted polymer solar cells (PSCs) by applying a solution-processable bilayer ZnO/carbon quantum dots (C-QDs) electron extraction layer (EEL). It is shown that the use of the bilayer EEL helps to suppress the exciton quenching by passivating the ZnO surface defects in the EEL, leading to an enhanced exciton dissociation, reduced charge recombination and more efficient charge extraction probability, and thereby achieving high power conversion efficiency (PCE). The inverted PSCs, based on the blend of poly­{4,8-bis­[(2-ethylhexyl)­oxy]­benzo­[1,2-<i>b</i>:4,5-<i>b</i>′]­dithiophene-2,6-diyl-<i>alt</i>-3-fluoro-2-[(2-ethylhexyl)­carbonyl]­thieno­[3,4-<i>b</i>]­thiophene-4,6-diyl} and [6,6]-phenyl C71-butyric acid methyl ester, possess a significant improvement in PCE of ∼9.64%, which is >27% higher than that of a control cell (∼7.59%). The use of a bilayer ZnO/C-QD EEL offers a promising approach for attaining high-efficiency inverted PSCs