Solution-Processed Green-Sensitive Organic Photoconductive Device Using Rhodamine 6G
Solution-Processed Green-Sensitive Organic Photoconductive Device Using Rhodamine 6G
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DOI：
10.1080/15421406.2012.701830
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发表时间：
2012-01-01
影响因子：
0.7
通讯作者：
Kamata, Norihiko
中科院分区：
文献类型：
--
作者：
Fukuda, Takeshi;Kimura, Sho;Kamata, Norihiko
由于罗丹明6G （R6G）在绿色波长区域具有选择性吸收带，采用R6G作为光导层，演示了绿敏有机光导器件。通过优化聚（3,4-乙烯二氧噻吩）：聚苯乙烯磺酸盐（PEDOT: PSS）作为载流子输运层的电导率和R6G的浓度，在-34 MV/m的电场下获得了最大的外量子效率32.6%。我们发现PEDOT: PSS层的低电导率是提高器件性能的最重要因素。此外，通过降低PEDOT: PSS层的电导率，提高了信噪比（光电流/暗电流），达到了最高值60。
Since rhodamine 6G (R6G) has the selective absorption band at the green wavelength regions, the green-sensitive organic photoconductive device was demonstrated using R6G as a photoconductive layer. By optimizing the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS) used as the carrier transport layer and the concentration of R6G, the maximum external quantum efficiency of 32.6% was obtained at the electric field of -34 MV/m. We found that the low-conductivity of the PEDOT: PSS layer was most important factor for the improved device performance. In addition, the signal-to-noise ratio (photocurrent/dark current) was improved by reducing the conductivity of the PEDOT: PSS layer, and the highest value of 60 was achieved.