Çakar Soner, Özacar Mahmut
Department of Chemistry, Science & Arts Faculty, Sakarya University, Sakarya 54187, Turkey.
Department of Chemistry, Science & Arts Faculty, Sakarya University, Sakarya 54187, Turkey; Biomedical, Magnetic and Semiconductor Materials Research Center (BIMAS-RC), Sakarya University, Sakarya 54187, Turkey.
Spectrochim Acta A Mol Biomol Spectrosc. 2016 Jun 15;163:79-88. doi: 10.1016/j.saa.2016.03.031. Epub 2016 Mar 24.
In this paper we have synthesized different morphological ZnO nanostructures via microwave hydrothermal methods at low temperature within a short time. We described different morphologies of ZnO at different Zn(NO3)2/KOH mole ratio. The ZnO nanostructures were characterized via X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and UV-vis spectrophotometry. All ZnO structures have hexagonal wurtzite type structures. The FESEM images showed various morphologies of ZnO such as plate, rod and nanoparticles. Dye sensitized solar cells have been assembled by these different morphological structures photo electrode and tannic acid or Fe-tannic acid complex dye as sensitizer. We have achieved at maximum efficiencies of photovoltaic cells prepared with ZnO plate in all dye systems. The conversion efficiencies of dye sensitized solar cells are 0.37% and 1.00% with tannic acid and Fe-tannic acid complex dye, respectively.
在本文中，我们通过微波水热法在低温下短时间内合成了不同形态的ZnO纳米结构。我们描述了在不同的Zn(NO3)2/KOH摩尔比下ZnO的不同形态。通过X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）和紫外可见分光光度法对ZnO纳米结构进行了表征。所有ZnO结构均为六方纤锌矿型结构。FESEM图像显示了ZnO的各种形态，如片状、棒状和纳米颗粒。利用这些不同形态结构的光电极以及单宁酸或铁-单宁酸复合染料作为敏化剂组装了染料敏化太阳能电池。在所有染料体系中，我们用ZnO片制备的光伏电池实现了最高效率。使用单宁酸和铁-单宁酸复合染料时，染料敏化太阳能电池的转换效率分别为0.37%和1.00%。
