Phenothiazine sensitizers bearing benzothiadiazole unit for dye-sensitized solar cells

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL Journal of Molecular Structure Pub Date : 2025-02-05 DOI:10.1016/j.molstruc.2025.141672

Liang Han, Jingzhi Zhu, Yanfei Jin, Jin'ge Zhao, Yujin Li, Qing Ye, Yanhong Cui

引用次数: 0

Abstract

Three N-phenylphenothiazine sensitizers bearing benzothiadiazole unit with benzene, furan and thiophene bridges and cyanoacetic acid acceptor were synthesized. Dyes with furan or thiophene bridge have better coplanarity and smaller energy gap than dye with benzene bridge, thus exhibiting redshifted ICT absorption and higher molar extinction coefficients. However, dye with benzene bridge almost has a double loading amount on TiO₂ film relative to the other two dyes, which contributes to its superior IPCE response spectrum. Thus, dye with benzene bridge achieves the optimal photoelectric conversion efficiency 6.76 % owing to its highest J_SC and V_OC. Compared with the corresponding N-phenylcarbazole sensitizers, N-phenylphenothiazine sensitizers bearing benzothiadiazole unit show redshifted ICT absorption, higher J_SC and hence improved photovoltaic performance.

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.