Triphenylamine, Indigo Based Dyes:Synthesis And Study In Photovoltaic Performance

Since the90years last century after it was first developed,Dye sensitized solar cells with its cheap,efficient extensive research boom.After20years of research,now,the performance of the DSSC has greatly increased,and its total photoelectric conversion efficiency has reached13.3%.For its easy adjusted structure,source advantage,DSSC become widely research hot spot.This paper design and synthetic a series of organic D-π-A dyes,then studied those dye photoelectric performance by means of theoretical calculation,electrochemical,UV-Vis absorption and DSSC device.Main contents are as follows:(1)Synthetized two organic dyes TPAID1and TPAID2base on conjugate unit indigo.We determined its’UV-vis absorption spectrum in chloroform,and the maximum absorption wavelength of the dye TPAID1in chloroform is in428nm,absorb sideband in about700nm,the maximum absorption wavelength of the dye TPAID2is in351nm,absorb sideband in450nm.Tested the cyclic voltammogram of the dyes by cyclic voltammetry,obtained the HOMO and LUMO level of the dyes.In AM1.5G,100mW/cm2,get dye TPAID1and TPAID2battery energy conversion efficiency were0.59%and1.42%respectively by device testiong.(2) Through the Suzuki coupling method, synthetized single and double anchor groups dye ID3and ID4. Determined its’UV-vis absorption spectrum in chloroform,and the maximum absorption wavelength of the dye ID3and ID4in chloroform is both in428nm,absorb sideband in about420nm and650nm. In AM1.5G,100mW/cm2,get dye ID3and ID4battery energy conversion efficiency were2.99%and2.57%respectively by device testiong.(3) We used pyrrolebithiophene,trianiline,benzobithiophene as donor-unit, low polythiophene,benzobithiophene as conjugate unit,cyanacrylic as recepctor unit,synthetized a series of monomers.And made some creative improved in molecular design and synthesis,so as to provde proof and support for further explore.