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一种具有减反射性能的Cu2ZnSnS4太阳能电池透明导电氧化物薄膜

敬婧 李致朋 卢伟胜 王宏宇 杨祖安 杨毅 尹祺圣 杨馥菱 沈晓明 曾建民 詹锋

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一种具有减反射性能的Cu2ZnSnS4太阳能电池透明导电氧化物薄膜

敬婧, 李致朋, 卢伟胜, 王宏宇, 杨祖安, 杨毅, 尹祺圣, 杨馥菱, 沈晓明, 曾建民, 詹锋

Transparent conductive oxide film with antireflective properties for Cu2ZnSnS4 solar cells

Jing Jing, Li Zhi-Peng, Lu Wei-Sheng, Wang Hong-Yu, Yang Zu-An, Yang Yi, Yin Qi-Sheng, Yang Fu-Ling, Shen Xiao-Ming, Zeng Jian-Min, Zhan Feng
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  • 通过研究一种新型透明导电氧化物薄膜(transparent conductive oxide, TCO)的减反射作用, 探索增加入射光进入Cu2ZnSnS4 (CZTS)太阳能电池从而提高太阳能电池效率的新途径. 在AM1.5光照条件下, 设计了一种在宽波长范围内具有更好的减反射性能的TCO薄膜, 即SiO2/ZnO减反射TCO薄膜(antireflective transparent conductive oxide, ATCO). 为了衡量300—800 nm波长范围内的减反射效果, 引入了有效平均反射率方法(effective average reflectance, EAR)进行测算. 为充分考虑折射率色散的影响以及TCO, ATCO薄膜与有源层的耦合, 本文采用多维光学传输矩阵对各关键材料层的耦合及膜厚进行了优化, 以准确衡量最优的减反射效果. 最后, 通过比较常规CZTSSC和ATCO-CZTSSC的减反射性能, 得到了新型ATCO膜, 可以有效地减少光损耗并提高光电转换效率的结论.
    At present, there are several kinds of broadband antireflection coatings (ARCs). For the flat multilayer ARC, it usually contains double, triple, or up to 4 layers. It has been demonstrated that the performance of a single layer coating is not good enough across the desired spectral range. Multiple layer ARCs have much better performance for broadband solar cells (SCs). When inspecting the antireflection structure of Cu2ZnSnS4 solar cells (CZTSSCs), it is shown that the transparent conductive oxide (TCO) of traditional CZTSSCs does not have an satisfactory antireflective performance. This paper aims to investigate a way to increase the incident light transmitted into CZTSSCs, and thus improving the efficiency of solar cells by studying the use of the antireflective effect of a TCO film. It introduces a new type of TCO film with better antireflective properties across a wide wavelength range. An SiO2/ZnO antireflective TCO (ATCO) is designed under AM1.5 illumination. In order to measure the antireflective effect over the 300–800 nm wavelength range, an effective average reflectance method (EAR) is introduced. Considering the effect of the refractive index dispersion and the coupling of the TCO or ATCO films with the active layer, in this paper we use a multi-dimensional transfer matrix to optimize the thickness of each key layer to accurately confirm the best antireflective effect. In addition, the optimized TCO film and the optimized ATCO film in CZTSSCs are compared and analyzed by means of EAR. The result shows, through the comparison of the antireflection between conventional TCO CZTSSCs and ATCO CZTSSCs, that there are considerable differences in final optimal reflectivity between TCO layer and ATCO film. For the conventional CZTSSC, the optimal effective average reflectance of TCO layer is 5.6%, and the lowest reflectivity in the waveband from 400 nm to 500 nm is 6.9%. In addition, the corresponding values obtained in the new ATCO CZTSSC are 3.8% and 1.6% respectively. These apparent changes in reflectivity are appealing in that the new ATCO films can effectively reduce light loss and improve the efficiency of photovoltaic conversion.
      通信作者: 詹锋, fzhan_gxu@126.com
    • 基金项目: 广西自然科学基金 (批准号: 2018GXNSFAA138186, 2014GXNSFAA118025, 2013GXNSFBA019019)、国家自然科学基金(批准号: 11364003)、广西有色金属及特色材料加工重点实验室系统性研究项目(批准号: GKN13-051-02)和广西有色金属及特色材料加工国家重点实验室培育基地开放基金 (批准号: GXKFJ12-01)资助的课题
      Corresponding author: Zhan Feng, fzhan_gxu@126.com
    • Funds: Project supported by the Natural Science Foundation of Guangxi Province, China (Grant Nos. 2018GXNSFAA138186, 2014GXNSFAA118025, 2013GXNSFBA019019), the National Natural Science Foundation of China (Grant No. 11364003), the Systematic Research Project of Key Laboratory of Processing for Non-ferrous Metal and Featured Materials of Guangxi Province, China (Grant No. GKN13-051-02), and the Open Fund of Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Province, China (Grant No. GXKFJ12-01)
    [1]

    Siddique R H, Gomard G, and Holscher H 2015 Nat. Commun. 6 6909Google Scholar

    [2]

    Jonathan S M, Wang G Y, John R M, James R H 2018 J. Mater. Chem. C 6 823

    [3]

    Neeraj K, Choudhury S, Polley D, Acharya R, Sinha J, Barman A, Mitra R K 2017 Opt. Lett. 42 1764Google Scholar

    [4]

    Cao G Y, Zhang C, Wu S L, Ma D, Li X F 2018 Chin. Phys. B 27 124202Google Scholar

    [5]

    Li L, Wu S L, Yu D, Wang W, Liu W C, Wu X S, Zhang F M 2016 Chin. Phys. B 25 028401Google Scholar

    [6]

    Jayasinghe R C, Perera A G U, Zhu H, Zhao Y 2012 Opt. Lett. 37 4302Google Scholar

    [7]

    Zhan F, He J F, Shang X J, Li M F, Ni H Q, Xu Y Q, Niu Z C 2012 Chin. Phys. B 21 037802Google Scholar

    [8]

    Leem J W, Jun D H, Heo J, Park W K, Park J H, Cho W J, Kim D E, Yu J S 2013 Opt. Express 21 A821Google Scholar

    [9]

    Richards B S 2003 Sol. Energ. Mat. Sol. C 79 369Google Scholar

    [10]

    Algora C, Alcaraz M F 1997 IEEE T. Electron Dev. 44 1499Google Scholar

    [11]

    Sun H T, Wang X P, Kou Z Q, Wang L J, Wang J Y, Sun Y Q 2015 Chin. Phys. B 24 047701Google Scholar

    [12]

    Ali B, Shahram M, Nima J A 2014 Chin. Phys. B 23 028803Google Scholar

    [13]

    Wang N F, Kuo T W, Tsai Y Z, Lin S X, Hung P K, Lin C L, Houng M P 2012 Opt. Express 20 7445Google Scholar

    [14]

    Dumont E, Dugnoille B, Bienfait S 1999 Thin Solid Films 353 93Google Scholar

    [15]

    Seol J S, Lee S Y, Lee J C, Nam H D, Kim K H 2003 Sol. Energy Mater. Sol. Cells 75 155Google Scholar

    [16]

    Park W D 2012 Trans. Electr. Electron. Mater. 13 196Google Scholar

    [17]

    Teng C W, Muth J F, Özgür Ü, Bergmann M J, Everitt H O, Sharma A K, Jin C, Narayan J 2000 Appl. Phys. Lett. 76 979Google Scholar

    [18]

    Palik E D 1997 Handbook of Optical Constant of Solids (New York, USA: Academic Publishing)

    [19]

    Born M, Wolf E. 1999 Principles of Optics (Cambridge, UK: Cambridge University Press) p70

    [20]

    Macleod H A 2006 ThinFilm Optical Filters (London, UK: Institute of Physics Publishing) p86

    [21]

    Zhan F, Li Z P, Shen X M, He H, Zeng J M 2014 Sci. World J. 26 5351

    [22]

    Yuan H R, Xiang X, Chang X, Lu D 2000 Acta Energ. Sol. Sin. 21 371

  • 图 1  Cu2ZnSnS4太阳能电池示意图

    Fig. 1.  Schematic diagram of Cu2ZnSnS4 solar cells.

    图 2  传统的TCO膜的Re与膜厚的关系图

    Fig. 2.  Conventional TCO film Re vs. film thickness.

    图 3  优化后TCO膜的反射率与波长的关系

    Fig. 3.  Reflectivity of optimal TCO film vs. wavelength.

    图 4  SiO2/ZnO ATCO薄膜的Re与SiO2厚度的关系

    Fig. 4.  SiO2/ZnO ATCO films Re vs. SiO2 thickness.

    图 5  (a)最佳TCO膜反射率与波长的关系; (b)最佳SiO2/ZnO ATCO膜反射率与波长的关系

    Fig. 5.  (a) Optimal TCO film reflectivity vs. wavelength; (b) optimal SiO2/ZnO ATCO films reflectivity vs. wavelength.

    表 1  通过EAR方法优化的用于CZTS太阳能电池的常规TCO和新ATCO膜的参数

    Table 1.  Parameters of conventional TCO and new ATCO films for CZTSSC optimized by EAR method.

    常规TCO
    (图2图3)
    新ATCO
    (图4图5)
    变化比
    例/%
    SiO2 厚度/nm70
    ZnO 厚度/nm50500
    CdS 厚度/nm20200
    最低反射率(400—500 nm)/%6.91.6–5.3
    有效平均反射率(Re)/%5.63.8–1.8
    下载: 导出CSV
  • [1]

    Siddique R H, Gomard G, and Holscher H 2015 Nat. Commun. 6 6909Google Scholar

    [2]

    Jonathan S M, Wang G Y, John R M, James R H 2018 J. Mater. Chem. C 6 823

    [3]

    Neeraj K, Choudhury S, Polley D, Acharya R, Sinha J, Barman A, Mitra R K 2017 Opt. Lett. 42 1764Google Scholar

    [4]

    Cao G Y, Zhang C, Wu S L, Ma D, Li X F 2018 Chin. Phys. B 27 124202Google Scholar

    [5]

    Li L, Wu S L, Yu D, Wang W, Liu W C, Wu X S, Zhang F M 2016 Chin. Phys. B 25 028401Google Scholar

    [6]

    Jayasinghe R C, Perera A G U, Zhu H, Zhao Y 2012 Opt. Lett. 37 4302Google Scholar

    [7]

    Zhan F, He J F, Shang X J, Li M F, Ni H Q, Xu Y Q, Niu Z C 2012 Chin. Phys. B 21 037802Google Scholar

    [8]

    Leem J W, Jun D H, Heo J, Park W K, Park J H, Cho W J, Kim D E, Yu J S 2013 Opt. Express 21 A821Google Scholar

    [9]

    Richards B S 2003 Sol. Energ. Mat. Sol. C 79 369Google Scholar

    [10]

    Algora C, Alcaraz M F 1997 IEEE T. Electron Dev. 44 1499Google Scholar

    [11]

    Sun H T, Wang X P, Kou Z Q, Wang L J, Wang J Y, Sun Y Q 2015 Chin. Phys. B 24 047701Google Scholar

    [12]

    Ali B, Shahram M, Nima J A 2014 Chin. Phys. B 23 028803Google Scholar

    [13]

    Wang N F, Kuo T W, Tsai Y Z, Lin S X, Hung P K, Lin C L, Houng M P 2012 Opt. Express 20 7445Google Scholar

    [14]

    Dumont E, Dugnoille B, Bienfait S 1999 Thin Solid Films 353 93Google Scholar

    [15]

    Seol J S, Lee S Y, Lee J C, Nam H D, Kim K H 2003 Sol. Energy Mater. Sol. Cells 75 155Google Scholar

    [16]

    Park W D 2012 Trans. Electr. Electron. Mater. 13 196Google Scholar

    [17]

    Teng C W, Muth J F, Özgür Ü, Bergmann M J, Everitt H O, Sharma A K, Jin C, Narayan J 2000 Appl. Phys. Lett. 76 979Google Scholar

    [18]

    Palik E D 1997 Handbook of Optical Constant of Solids (New York, USA: Academic Publishing)

    [19]

    Born M, Wolf E. 1999 Principles of Optics (Cambridge, UK: Cambridge University Press) p70

    [20]

    Macleod H A 2006 ThinFilm Optical Filters (London, UK: Institute of Physics Publishing) p86

    [21]

    Zhan F, Li Z P, Shen X M, He H, Zeng J M 2014 Sci. World J. 26 5351

    [22]

    Yuan H R, Xiang X, Chang X, Lu D 2000 Acta Energ. Sol. Sin. 21 371

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出版历程
  • 收稿日期:  2020-06-11
  • 修回日期:  2020-07-20
  • 上网日期:  2020-12-02
  • 刊出日期:  2020-12-05

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