Enhanced diode characteristics of organic solar cells using titanium suboxide electron transport layer
Enhanced diode characteristics of organic solar cells using titanium suboxide electron transport layer
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DOI：
10.1063/1.3409116
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发表时间：
2010-04-19
影响因子：
4
通讯作者：
Heeger, Alan J.
中科院分区：
文献类型：
--
作者：
Lee, Jae Hyun;Cho, Shinuk;Heeger, Alan J.
分析了聚[N-9”-庚烷-2,7-咔唑-氨基-5,5-（4′，7′-二-2-乙烯基-2′，1′，3′-苯并噻唑）]与[6,6]-苯基C(70)-丁酸甲酯相分离共混物有机体异质结太阳能电池的（暗）二极管特性，重点研究了亚氧化钛（TiO(x)）电子传输层的影响。在器件结构中加入TiO(x)层使饱和电流密度降低了26倍，并联电阻增加了12倍。二极管的理想因数和串联电阻对于有和没有TiO(x)层的二极管分别几乎相同。结果表明，TiO(x)层增加了空穴输运的能垒，降低了少数载流子密度。(C) 2010年美国物理研究所。(doi: 10.1063/1.3409116)
The (dark) diode characteristics of the organic bulk heterojunction solar cell based on the phase separated blend of poly[N-9 ''-heptadecanyl-2,7-carbazole-alt-5,5-(4', 7'-di-2-thenyl-2', 1', 3'-benzothiadiazole )] with [6,6]-phenyl C(70)-butyric acid methyl ester have been analyzed with a focus on the effect of the titanium suboxide (TiO(x)) electron transport layer. The addition of the TiO(x) layer into the device structure causes the saturation current density to decrease by a factor of 26 and the shunt resistance to increase by a factor of 12. The diode ideality factor and series resistance are, respectively, almost the same for diodes made with and without the TiO(x) layer. The results indicate that the TiO(x) layer increases the energy barrier for hole transport and reduces the minority carrier density. (C) 2010 American Institute of Physics. [doi:10.1063/1.3409116]