Acid-doped multi-wall carbon nanotube/n-Si heterojunctions for enhanced light harvesting

作者：Mohammed Muatez; Li Zhongrui^*; Cui Jingbiao; Chen Tar pin

来源：Solar Energy, 2014, 106: 171-176.

DOI：10.1016/j.solener.2014.03.014

• Carbon nanotube solar cells
• MWNT/Si
• Nitric acid
• Sulfuric acid
• Acid infiltration
• Photoelectrochemical cells

Multiple wall carbon nanotube (MWNT) networks form Schottky-like heterojunction on n-type silicon substrate. Acid doping down-shifts the Fermi level of the MWNTs, can significantly reduce the internal resistance of the MWNT film. Wetting the MWNT networks with nitric or sulfuric acid can form MWNT-acid-Si photoelectrochemical units. The photoelectrochemical units and the Si-MWNT heterojunctions connected in parallel on the same side of the Si substrate, consequently boosting the power conversion efficiency by more than 10 times.

• 出版日期2014-8