Au掺杂对TiO2薄膜表面态及电荷传输性能的影响

doi:10.7503/cjcu20170021

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (11): 2038.doi: 10.7503/cjcu20170021

Au掺杂对TiO₂薄膜表面态及电荷传输性能的影响

郑家伟^1,², 姜玲¹, 丁勇^1,³, 莫立娥¹, 丁有才^1,², 胡林华¹(), 戴松元^1,³()

1. 中国科学院合肥物质科学研究院应用技术研究所, 中国科学院光伏与节能材料重点实验室, 合肥230088
2. 中国科学技术大学研究生院科学岛分院, 合肥 230026
3. 华北电力大学新型薄膜太阳电池北京市重点实验室, 北京 102206

收稿日期:2017-01-10 出版日期:2017-11-10 发布日期:2017-10-30
作者简介:联系人简介: 戴松元, 男, 博士, 教授, 博士生导师, 主要从事薄膜太阳电池研究. E-mail: sydai@ipp.ac.cn。胡林华, 男, 博士, 研究员, 博士生导师, 主要从事薄膜太阳电池研究. E-mail: lhhu@rntek.cas.cn
基金资助:
国家高技术研究发展计划项目(批准号: 2015AA050602)、中国科学院国际合作局对外合作重点项目(批准号: GJHZ1607)、国家自然科学基金(批准号: U1205112, 51572080, 21273242)和安徽省自然科学基金(批准号: 1508085SMF224)资助

Influence of Au Doping on the Surface States and Charge Transport in TiO₂ Films^†

ZHENG Jiawei^1,², JIANG Ling¹, DING Yong^1,³, MO Lie¹, DING Youcai^1,², HU Linhua^1,^*(), DAI Songyuan^1,^3,^*()

1. Key Laboratory of Photovoltaic and Energy Conservation Materials, CAS, Institute of Applied Technology,Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230088, China
2. Science Island Branch of Graduate School, University of Science & Technology of China,University of Science and Technology of China, Hefei 230026, China
3. Beijing Key Laboratory of Novel Thin Film Solar Cells, North China Electric Power University, Beijing 102206, China

Received:2017-01-10 Online:2017-11-10 Published:2017-10-30
Contact: HU Linhua,DAI Songyuan E-mail:lhhu@rntek.cas.cn;sydai@ipp.ac.cn
Supported by:
† Supported by the National High Technology Research and Development Program of China(No.2015AA050602), the External Cooperation Program of BIC, Chinese Academy of Sciences(No.GJHZ1607), the National Natural Science Foundation of China(Nos.U1205112, 51572080, 21273242) and the Natural Science Foundation of Anhui Province, Chian(No.1508085SMF224)

摘要/Abstract

摘要：

采用两步法合成了不同Au掺杂量的TiO₂薄膜材料, 并通过循环伏安(CV)和电化学阻抗谱(EIS)探究了不同Au掺杂量TiO₂薄膜的表面态数量及其在禁带中的分布情况. 借助强度调制光电流/电压谱(IMPS/IMVS)研究了薄膜内电子传输时间和寿命及界面电荷转移性能等. 结果表明, 适量Au(摩尔分数0.2%)的掺入可有效降低薄膜的表面态数量, 优化表面态分布情况, 提高电子在TiO₂/染料/电解质界面的电阻, 从而改善电子的传输性能, 提升太阳电池的光电转换效率.

关键词: 表面态, 金掺杂, 二氧化钛薄膜, 电荷传输, 太阳电池

Abstract:

Nanoblocky TiO₂ with different contents of Au doping was synthesized by two-step method. Cyclic voltammetry and electrochemical impedance spectroscopy were used to investigate the influence of Au doping on the number and distribution of surface states in the films. Meanwhile, intensity-modulated photocurrent/photovoltage spectroscopy was used to study the electron transfer and recombination process. The results show that Au doping can effectively reduce the surface states in TiO₂ films and optimize the energy distribution. Furthermore, in-depth characterizations indicate that Au doping(molar fraction, 0.2%) can increase the charge transfer resistance at the interfaces of dyed-TiO₂/electrolyte. Overall, the cell performance was relatively dependent on the effect of surface states essentially.

Key words: Surface state, Au Doping, TiO2 Film, Charge transport, Solar cell

中图分类号:

O646

TrendMD:

郑家伟, 姜玲, 丁勇, 莫立娥, 丁有才, 胡林华, 戴松元. Au掺杂对TiO₂薄膜表面态及电荷传输性能的影响. 高等学校化学学报, 2017, 38(11): 2038.

ZHENG Jiawei, JIANG Ling, DING Yong, MO Lie, DING Youcai, HU Linhua, DAI Songyuan. Influence of Au Doping on the Surface States and Charge Transport in TiO₂ Films^†. Chem. J. Chinese Universities, 2017, 38(11): 2038.

图/表 11

Fig.1 SEM images of TiO2-1(A, D), TiO2-2(B, E) and TiO2-3(C, F) films

Fig.2 XRD patterns of TiO2-1(a), TiO2-2(b) and TiO2-3(c) films

Fig.3 XPS spectra of TiO2-2(A) and TiO2-3(B) films

Fig.4 Peak current of TiO2-1 film under different scan rates(A) and cyclic voltammograms of TiO2-1(a), TiO2-2(b) and TiO2-3(c) films at the scan rate of 500 mV/s(B)

Fig.5 General transmission line model of DSSCsRs: Square resistance; Rco: interface resistance between TCO and TiO2; Cco: interface capacitance between TCO and TiO2; Rt: transmission resistance of electrons in TiO2; Cμ: interface capacitance between TiO2 and solution; Rct: interface resistance between TiO2 and solution; RTCO: interface resistance between TCO and solution; CTCO: interface capacitance between TCO and solution; Zd: impedance of solution; RPt: interface resistance between Pt and solution; CPt: interface capacitance between Pt and solution.

Fig.6 Results from the impedance data for chemical capacitance of DSSCs with TiO2-1(a), TiO2-2(b) and TiO2-3(c) photoanodes

Fig.7 Voc as a function of lnQ for three cells

Fig.8 Light intensity dependence of electron transport time(A) and electron lifetime(B) for three DSSCs

Fig.9 Nyquist plots of the three photoanode-based DSSCs at -0.72 V in dark conditionsRs is the series resistance, CPE1 and Rct1 are the double-layer capacitance and charge-transfer resistance between Pt counter electrode and electrolyte. CPE2 and Rct2 are the chemical capacitance and charge-transfer resistance between the mesoscopic TiO2 film and electrolyte. ZW is the diffusion impedance.

Fig.10 J-V(A) and IPCE-λ curves(B) of the DSSCs with the three photoanodes

Table 1 Photovoltaic characteristics of DSSCs with the three photoanodes

Cell	J_sc/(mA·cm^-2)	V_oc/mV	FF	η(%)
DSSC-1	13.90±0.18	688±8	0.73±0.01	6.99±0.12
DSSC-2	14.30±0.29	702±3	0.74±0.01	7.48±0.10
DSSC-3	14.07±0.12	695±3	0.74±0.01	7.22±0.08

参考文献 32

[1]	Asahi R., Morikawa T., Ohwaki T., Aoki K., Taga Y., Science,2001, 293, 269-271
[2]	Zhang J. C., Wen Y., Li Q. Y., Han Z. Y., Fu Z. H., Cao W. l., Chem. J. Chinese Universities,2010, 31(5), 998-1002
[3]	Guo Y., Hu J., Wan L., Adv. Mater., 2008, 20, 2878-2887
[4]	Jiang Y., Xia Y., Zhang M., Sun W., Liu Y., Zhao X., Mater. Lett., 2015, 161, 491-494
[5]	Gratzel M., Natur., 2001, 414, 338-344
[6]	Bisquert J., Fabregatsantiago F., Morasero I., Garciabelmonte G., Barea E. M., Palomares E., Chem. J. Chinese Universities,2010, 31, 684-698
[7]	Fabregatsantiago F., Morasero I., Garciabelmonte G., Bisquert J., Chem. J. Chinese Universities,2010, 31, 758-768
[8]	Bisquert J., Zaban A., Greenshtein M., Morasero I., J. Am. Chem. Soc., 2004, 126, 13550-13559
[9]	Salvador P., Hidalgo M. G., Zaban A., Bisquert J., Chem. J. Chinese Universities,2010, 31, 15915-15926
[10]	Anta J. A., Nelson J., Quirke N., Chem. J. Chinese Universities,2010, 31, 125324
[11]	Bisquert J., Zaban A., Salvador P., Chem. J. Chinese Universities,2010, 31, 8774-8782
[12]	Nelson J., Chandler R. E., Coord. Chem. Rev., 2004, 248, 1181-1194
[13]	Nelson J., Haque S. A., Klug D. R., Durrant J. R., Chem. J. Chinese Universities,2010, 31, 205321
[14]	Nelson J., Phys. Rev. B, 1999, 59, 15374-15380
[15]	Ding Y., Mo L. E., Tao L., Ma Y. C., Hu L. H., Huang Y., Fang X. Q., Yao J., Xi X., Dai S. Y., Chem. J. Chinese Universities,2010, 31, 1046-1052
[16]	Ding Y., Zhou L., Mo L. E., Jiang L., Hu L. H., Li Z., Chen S. H., Dai S. Y., Adv. Funct. Mater., 2015, 25, 5946-5953
[17]	Han L., Koide N., Chiba Y., Islam A., Mitate T., CR. Chim., 2006, 9, 645-651
[18]	Schlichthörl G., Huang S. Y., Sprague J., Frank A. J., Chem. J. Chinese Universities,2010, 31, 8141-8155
[19]	Duffy N. W., Peter L. M., Rajapakse R. M. G., Wijayantha K. G. U., Electrochem. Commun., 2000, 2, 658-662
[20]	Hu L. S., Fong C. C., Zhang X., Chan L. L., Lam P. K. S., Chu P. K., Wong K. Y., Yang M. S., Environ. Sci. Technol., 2016, 50, 4430-4438
[21]	Yu W. J., Sun W., Liu Y., Mehnane H. F., Liu H., Zhang K., Cai B., Liu W., Guo S., Zhao X. Z., Chem. J. Chinese Universities,2010, 31, 705-711
[22]	Zhu J. L., Xia X. F., Zhu S. S., Liu X., Li H. X., Chem. J. Chinese Universities,2010, 31(10), 1833-1839
	(朱洁莲, 夏晓峰, 朱珊珊, 刘湘, 李和兴. 高等学校化学学报, 2016, 37(10), 1833-1839)
[23]	Kang S. H., Kim J., Sung Y., Chem. J. Chinese Universities,2010, 31, 5242-5250
[24]	Yuan X., Gao B. F., Wan J. F., Lin B. Z., Chen Y. L., Chem. J. Chinese Universities,2010, 31(2), 355-360
	(袁霞, 高碧芬, 万建风, 林碧洲, 陈亦琳. 高等学校化学学报, 2015, 36(2), 355-360)
[25]	Shinde P. S., Choi S. H., Kim Y., Ryu J., Jang J. S., Phys. Chem. Chem. Phys., 2016, 18(4), 2495-2509
[26]	Kou D. X., Liu W. Q., Hu L. H., Dai S. Y., Chem. J. Chinese Universities,2010, 31, 197-202
[27]	Anta J. A., Casanueva F., Oskam G., Chem. J. Chinese Universities,2010, 31, 5372-5378
[28]	Wang Q., Ito S., Gratzel M., Fabregatsantiago F., Morasero I., Bisquert J., Bessho T., Imai H., Chem. J. Chinese Universities,2010, 31, 25210-25221
[29]	Li Q. H., Tang J. W., Du. N., Qin Y. C., Xiao J., He B. L., Chen H. Y., Chu L., Chem. J. Chinese Universities,2010, 31, 816-821
[30]	Kou D. X., Liu W. Q., Hu L. H., Huang Y., Dai S. Y., Jiang N. Q., Acta Phys. Sin., 2010, 59, 5857-5862
	(寇东星, 刘伟庆, 胡林华, 黄阳, 戴松元, 姜年权. 物理学报, 2010, 59, 5857-5862)
[31]	Liu W. Q., Hu L. H., Dai S. Y., Guo L., Jiang N., Kou D. X., Chem. J. Chinese Universities,2010, 31, 2338-2343
[32]	Ding Y., Ma Y. M., Tao L., Hu L. H., Li G., Jiang L., Li Z. Q., Mo L. E., Yao J., Dai S. Y., RSC Adv., 2015, 5, 17493-17500

Au掺杂对TiO₂薄膜表面态及电荷传输性能的影响

Influence of Au Doping on the Surface States and Charge Transport in TiO₂ Films^†

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