Preparation And Properties Of Terridine Derivatives Composite Inorganic Nanomaterials Photoelectric Materials

Organic-inorganic composite photovoltaic nanomaterials are novel heterojunction solar cell materials with organic conjugated compound as electron donor and inorganic semiconductor nanocrystals as electron acceptors,we have successfully constructed Zn ← S → Zn units as π bridges through organic complexes and inorganic compounds to realize the effective electron transfer from organic matter to inorganic matter and make reasonable explanation,And effectively solve the organic / inorganic interface mismatch problem,the depth of the interface to understand the separation and transport mechanism of photogenerated carriers to improve photoelectric conversion efficiency is the most important in the field of a research direction.Based on this,the project has carried out a series of research work on "building a bridge-type organic-inorganic interface at the molecular level,exploring the interface separation and transport mechanism of charge carriers,and improving the photoelectron properties of composites".The main contents of the related work are as follows:1.In this work,we used a novel Zn（S）2L organic complex（L = N-hexyl-3-{ 2-（4-（2,2′:6′,2′′-terpyridin-4′-yl）phenyl）ethenyl}carbazole）as a surface stabilizer to prepare organic complex coated ZnS nanocrystalline self-assembled microspheres.Due to the strong π bond properties of the terminal chalcogen atoms（S1-valence）of the organic ligands,the homologous Zn←S→Zn unit interface was constructed as aπ-conjugated bridge,and the ZnS nanocrystals were bonded together and Effective Electron Transfer Transition of Zn（S）2L Organic Complex to ZnS Nanocrystals.In the work,the homologous Zn←S→Zn unit interface is proposed to function as aπ–conjugated bridge for effective electron–transfer transition from Zn（S）2L moiety to ZnS nanocrystal to significantly improve the photoelectric response performance,such as the long lifetime of photogenerated charge carriers from 8×10–8 s to 4×10–5 s and the high recombination luminescence quantum efficiency（QE）up to 69%,which are confirmed by the systematically investigation with Raman spectra,XPS spectra,Uv–vis absorption spectra and transient photovoltage（TPV）technique.In addition,the ZnS / Zn（S）2L complex used as an additional electron donor in an organic /inorganic hybrid solar cell device can increase the performance of solar cell devices by about 30%.2.In this paper,Cu₉S₅ nanowires and zinc-doped Cu₉S₅ nanowires were prepared by simple chemical coprecipitation method.The amount of zinc ions in Cu₉S₅ nanowires was adjusted by the addition of ZnCl2,and the band gap of Cu₉S₅ nanowires was further regulated.The optimized photoelectric properties of Cu₉S₅ nanowires were optimized to improve the photoelectric utilization of the materials.The products were characterized by XRD,SEM,EDX and TPV.In the same way,we used Zn（S）2L organic complex（L = N-hexyl-3-{ 2-（4-（2,2′:6′,2′′-terpyridin-4′-yl）phenyl）ethenyl} carbazole）as a surface stabilizer,and zinc-doped Cu₉S₅ nanowires to prepare organic complex coated photoelectrometer materials,effectively improve the lifetime of photogenerated carriers and optimize their photoelectricity performance.