Thin film phototransistors based on a D–A copolymer of P(DPP4T-co-BDT) exhibited a photoresponsivity of up to 4.0 × 103 A W−1 and a photocurrent/dark-current ratio of 6.8 × 105 under white light irradiation with a low light intensity (9.7 μW cm−2).
基于P(DPP4T-co-BDT)的D-A共聚物的薄膜光晶体管,在低光强(9.7μW cm-2)的白光照射下,表现出高达4.0×10³ A W-1的光响应度和6.8×10^5的光电流/暗电流比。
Planar Benzo[1,2-<i>b</i>:4,5-<i>b′</i>]dithiophene Derivatives Decorated with Nitronyl and Imino Nitroxides
Such large intermolecular couplings resulting from good π-stacking mark BDT-IN and BDTTh2–NN as promising crystalline materials with similar sized Jintra and Jinter. In addition, we also extracted a coupling within the chain of Jchain/kB = −2.2 K and a coupling between the chains of zJinterchain = −1.5 K for BDTTh2–NN by a Heisenberg chain model. Intra- and intermolecularinteractions and spin densities