Enhancing the Efficiency of Dye Sensitized Solar Cells by Using Anatase and Brookite Mixed Phases of TiO2

doi:10.1166/jno.2019.2535

IMR OpenIR

	Enhancing the Efficiency of Dye Sensitized Solar Cells by Using Anatase and Brookite Mixed Phases of TiO2
	Khan, M. I.1; Shahnawaz 1; Imran, Shahid 1; Yousaf, Muhammad Waqas 1; Wahab, A.2; Adil, F.1; Majeed, Shahbaz 3; Khan, M. Fiaz 3; Aziz, Tariq 4
通讯作者	Khan, M. I.(iftikharphysicsuet@gmail.com)
	2019-11-01
发表期刊	JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
ISSN	1555-130X
卷号	14 期号:11 页码:1582-1588
摘要	The phases of TiO2 have an important role in the efficiency of dye sensitized solar cells (DSSCs). In this research, the effects of anatase and mixed phases (brookite and anatase) of TiO2 on the efficiency of DSSCs have been reported. 2% Cu doped TiO2 (Cu:TiO2) thin films are prepared by sol-gel dip coating technique. These films are annealed at the temperatures of "350 degrees C, 450 degrees C, 550 degrees C and 650 degrees C." XRD showed that at 550 degrees C and 650 degrees C, films have mixed phases of TiO2. Also, it showed that grain size is increased by increasing temperature. No extra phases of Cu like CuO etc. were observed in XRD graphs, which confirmed that Cu is completely dissolved into TiO2. UV-Vis results showed that all the films have more than 80% transmittance in the visible region. The optical band gap energy (E-g) of films at " 350 degrees C, 450 degrees C, 550 degrees C and 650 degrees C" is 3.96, 3.81, 3.75 and 3.64 eV, respectively. The electrical resistivity of these thin films by four point probe technique is calculated as 121.8 x 10(2) Omega-m, 95.69 x 10(2) Omega-m, 86.65 x 10(2) Omega-m and 76.3 x 10(2) Omega-m respectively. Solar simulator results showed that the current density (J(sc)) of mixed phase is higher than single phase, causing higher efficiency. The maximum J(sc) 5.12 mAcm(-2) is achieved at 650 degrees C (mixed phase), resulting in higher efficiency of 2.35% which is more than 100 times the efficiency of anatase phase which has 1.18%. This work will provide a way to enhance the efficiency of DSSCs by using mixed phases of TiO2. In future, if 1-D structure of these mixed phases is used in DSSCs then efficiency of DSSCs will improve definitely (or positively).
关键词	Cu TiO2 Anatase Brookite DSSCs
DOI	10.1166/jno.2019.2535
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Science & Technology - Other Topics ; Physics
WOS类目	Engineering, Electrical & Electronic ; Nanoscience & Nanotechnology ; Physics, Applied
WOS记录号	WOS:000491075000010
出版者	AMER SCIENTIFIC PUBLISHERS
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/135681
专题	中国科学院金属研究所
通讯作者	Khan, M. I.
作者单位	1.Univ Lahore, Dept Phys, Lahore 53700, Pakistan 2.COMSATS Univ Islamabad, Dept Phys, Lahore Campus, Lahore 54000, Pakistan 3.UET, Dept Phys, Lahore 54890, Pakistan 4.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Khan, M. I.,Shahnawaz,Imran, Shahid,et al. Enhancing the Efficiency of Dye Sensitized Solar Cells by Using Anatase and Brookite Mixed Phases of TiO2[J]. JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS,2019,14(11):1582-1588.
APA	Khan, M. I..,Shahnawaz.,Imran, Shahid.,Yousaf, Muhammad Waqas.,Wahab, A..,...&Aziz, Tariq.(2019).Enhancing the Efficiency of Dye Sensitized Solar Cells by Using Anatase and Brookite Mixed Phases of TiO2.JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS,14(11),1582-1588.
MLA	Khan, M. I.,et al."Enhancing the Efficiency of Dye Sensitized Solar Cells by Using Anatase and Brookite Mixed Phases of TiO2".JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS 14.11(2019):1582-1588.