采用MoO3作为阳极缓冲层,制备了结构为ITO/MoO3/P3HT/C60/Bphen/Ag的有机太阳能电池器件,研究了MoO3薄膜厚度对器件性能的影响.采用常用的等效电路模型,仿真计算得到MoO3缓冲层对器件串联电阻的影响.此外,测试了器件的吸收光谱,研究了MoO3缓冲层对器件光子吸收的作用.结果表明,在MoO3厚度为1 nm时,器件的短路电流密度、开路电压和填充因子都得到了提高.MoO3可以改善电极和有机层的界面接触性能,能够有效降低器件的串联电阻,提高载流子的传输和收集效率;同时,MoO3缓冲层透过率高,不会对器件的光吸收效率造成影响.
参考文献
| [1] | Kim J Y,Lee K,Coates N E,et al.Efficient tandem polymer solar cells fabricated by all-solution processing[J].Science,2007,317:222-225. |
| [2] | Yang Y,Wudl F.Organic electronics:from materials to devices[J].Adv.Mater.,2009,21:1401-1403. |
| [3] | Kippelen B,Bredas J L.Organic photovoltaics[J].Energy and Environ.Sci.,2009,2:251-261. |
| [4] | Huang J,Yu J S,Guan Z Q,et al.Improvement in open circuit voltage of organic solar cells by inserting a thin phosphorescent iridium complex layer[J].Appl.Phys.Lett.,2010,97:143301. |
| [5] | Tang C W.Two-layer organic photovoltaic cell[J].Appl.Phys.Lett.,1986,48:183-185. |
| [6] | Chen H Y,Hou J H,Zhang S Q,et al.Polymer solar cells with enhanced open-circuit voltage and efficiency[J].Nature Photon.,2009,3:649-653. |
| [7] | Liang Y Y,Xu Z,Xia J B,et al.For the bright future-bulk heterojunction polymer solar cells with power conversion efficiency of 7.4%[J].Adv.Mater.,2010,22:E135-E138. |
| [8] | Heliatek and IAPP achieve production-relevant efficiency record for organic photovoltaic cells[OL].http://www.heliatek.com/news-19. |
| [9] | Sista S,Hong Z,Park M H,et al.High-efficiency polymer tandem solar cells with three-terminal structure[J].Adv.Mater.,2009,21:E1-E4. |
| [10] | Wang N N,Yu J S,Zang Y,et al.Effect of buffer layers on the performance of organic photovoltaic cells basedon copper phthalocyanine and C60[J].Sol.Energy Mater.and Sol.Cells,2010,94:263-266. |
| [11] | Krebs F C,Gevorgyan S A,Alstrup J.A roll-to-roll process to flexible polymer solar cells:model studies,manufacture and operational stability studies[J].J.Mater.Chem.,2009,19:5442-5451. |
| [12] | Feng Z H,Hou Y B,Lei D S.The influence of electrode buffer layers on the performance of polymer photovoltaic devices[J].Renew.Energ.,2010,35:1175-1178. |
| [13] | Godoy A,Cattin L,Toumi L,et al.Effects of the buffer layer inserted between the transparent conductive oxide anode and the organic electron donor[J].Sol.Energy Mater.and Sol.Cells,2010,94:648-654. |
| [14] | Shrotriya V,Li G,Yao Y,et al.Transition metal oxides as the buffer layer for polymer photovoltaic cells[J].Appl.Phys.Lett.,2006,88:073508. |
| [15] | Zhao D W,Liu P,Sun X W,et al.An inverted organic solar cell with an ultrathin Ca electron-transporting layer and MoO3 hole-transporting layer[J].Appl.Phys.Lett.,2009,95:153304. |
| [16] | Kinoshita Y,Takenaka R,Murata H.Independent control of open-circuit voltage of organic solar cells by changing film thickness of MoO3 buffer layer[J].Appl.Phys.Lett.,2008,92:243309. |
| [17] | Li N,Lassiter B E,Lunt R R,et al.Open circuit voltage enhancement due to reduced dark current in small molecule photovoltaic cells[J].Appl.Phys.Lett.,2009,94:023307. |
| [18] | Yoo S,Domercq B,Kippelen B.Intensity-dependent equivalent circuit parameters of organic solar cells based on pentacene and C60[J].J.Appl.Phys.,2005,97:103706. |
| [19] | Servaites J D,Yeganeh S,Marks T J,et al.Efficiency enhancement in organic photovoltaic cells:consequences of optimizing series resistance[J].Adv.Funct.Mater.,2010,20:97-104. |
| [20] | Wang N N,Yu J S,Lin H,et al.Organic photovoltaic cells with improved performance using bathophenanthroline as a buffer layer[J].Chin.J.Chem.Phys.,2010,23:84-88. |
| [21] | Huang J,Yu J S,Lin H,et al.Detailed analysis of bathocuproine layer for organic solar cells based on copper phthalocyanine and C60[J].J.Appl.Phys.,2009,105:073105. |
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