3 September 2008 Efficacious photocurrent generation and carrier transport by quantum dot decorated carbon nanotubes
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Abstract
CdSe/ZnS core/shell quantum dots have been decorated on thin multiwalled and singlewalled carbon nanotubes (CNTs) by chemical functionalization and substrate gate-bias control. CdSe quantum dots were negatively charged by adding mercaptoacetic acid (MAA). The silicon oxide substrate was decorated by octadecyltrichlorosilane (OTS) and converted to hydrophobic surface. The negatively charged CdSe/ZnS NCs were adsorbed on the SWCNT surface by applying the negative gate bias. The selective adsorption of CdSe/ZnS quantum dots on SWCNTs was confirmed by confocal laser scanning microscope. Quantum dots decorated carbon nanotubes have been used for effective photogenaration and carrier transport through the organic photovoltaic device which has fabricated using effective polymers. The results clearly indicate the efficient photocurrent generation and carrier transport which effectively increased the efficiency of the device for the next generation organic solar cell applications.
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Chandan Biswas, Chandan Biswas, Seung Yol Jeong, Seung Yol Jeong, Seong Chu Lim, Seong Chu Lim, Dong Jae Bae, Dong Jae Bae, Young Hee Lee, Young Hee Lee, Hyun Jin Shin, Hyun Jin Shin, Seon-Mi Yoon, Seon-Mi Yoon, Jae Young Choi, Jae Young Choi, Ok Hwan Cha, Ok Hwan Cha, Mun Seok Jeong, Mun Seok Jeong, David Perello, David Perello, Minhee Yun, Minhee Yun, } "Efficacious photocurrent generation and carrier transport by quantum dot decorated carbon nanotubes", Proc. SPIE 7052, Organic Photovoltaics IX, 705216 (3 September 2008); doi: 10.1117/12.794423; https://doi.org/10.1117/12.794423
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