Synthesis and photovoltaic performance of dibenzofulvene-based organic sensitizers for DSSC
作者:A.-L. Capodilupo、R. Giannuzzi、G.A. Corrente、L. De Marco、E. Fabiano、A. Cardone、G. Gigli、G. Ciccarella
DOI:10.1016/j.tet.2016.08.006
日期:2016.9
sensitizers in liquid dye-sensitizedsolarcells. The effects of alkoxy-functionalization of donormoiety and of hexyl chain insertion onto one thienyl ring of π-linker on dye properties and performances were investigated. The results discover the dye TK7, bearing two simple diphenylamine groups without alkoxy chains, exhibits the best behavior in terms of light absorption and cell performance (PCE of
三种新型2D-π-A无金属有机染料TK 7 - 9含有二苯并富烯(DBF连接到两个噻吩单元作为π桥),具有和不具有烷氧基链作为供体基团与氰基丙烯酸部分作为受体二芳基胺合成了锚定基团。通过光学和电化学测量以及密度泛函理论计算对新型染料TK进行了表征,并将其用作液体染料敏化太阳能电池中的敏化剂。研究了供体部分的烷氧基官能化以及在π-连接基的一个噻吩环上插入己基链的行为对染料性能和性能的影响。结果发现染料TK7带有两个不带烷氧基链的简单二苯胺基团,在光吸收和电池性能方面表现出最佳性能(PCE为7.9%,J sc的光伏参数为17.82 mA cm -2,V oc为670 mV,FF为0.66) 。由于烷氧基链的存在,TK8和TK9的功率转换效率分别较低,分别为6.3%和6.1%。
A rational design of the novel phenanthro[9,10-d]imidazolebased pH sensing fluorophore PITP was developed, in which phenanthroimidazole acts as a donor and pyridine acts as an acceptor. Various spectral studies confirm that the protonation occurs at two different nitrogen centres, each of which produces an observable color change depending on the pH of the buffer solution. DFT calculations also support
开发了一种新型的基于菲咯啉[9,10- d ]咪唑的pH传感荧光团PITP,设计了菲并咪唑为供体,吡啶为受体。各种光谱研究证实,质子化发生在两个不同的氮中心,根据缓冲溶液的pH值,每个氮中心都会产生可观察到的颜色变化。DFT计算也支持实验结果。我们表明PITP可以用作酸性区域中的比例式和比色pH传感器。
The effect of acceptor end groups on the physical and photovoltaic properties of A–π–D–π–A type oligomers with same S, N-heteropentacene central electron donor unit for solution processed organic solar cells
作者:Hyejeoung Lee、Hyeonjun Jo、Dayoung Kim、Subhayan Biswas、Ganesh D. Sharma、Jaejung Ko
DOI:10.1016/j.dyepig.2016.02.029
日期:2016.6
novel acceptor–donor–acceptor small molecules with different end groupacceptors such as dicyanovinyl, cyanoacetate and indenedione, denoted as SM1, SM2 and SM3, respectively, linked with same central S, N-heteropentacene donor is described. These small molecules are used as electron donor along with the PC71BM as an electronacceptor for the fabrication of solution processed bulk heterojunction organic
Orientation and Substituent Effects on the Properties of the Diacetylene-Group Connected Octaethylporphyrin–Dihexylbithiophene Derivatives (OEP–DHBTh–X) Carrying Electron-Withdrawing Groups
Orientational isomers of the octaethylporphyrin–dihexylbithiophene (OEP–DHBTh) derivatives connected with a diacetylene linkage were synthesized, with various electron-withdrawing substituents X attached at the ends. The effects of DHBTh orientation and X substituent on the properties of OEP–DHBTh–X (X = H, Br, CN, CHO, and NO2) were studied and compared with those of related OEP derivatives.