Department of Chemistry, Center for Human Interface Nanotechnology, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Republic of Korea).
ChemSusChem. 2015 Jul 20;8(14):2407-13. doi: 10.1002/cssc.201403464. Epub 2015 May 8.
A nanoink solution-based process was developed as a low-costing method for the fabrication of Cu(In,Ga)Se2 (CIGSe) thin-film photovoltaic cells. The sonochemical synthesis of CIGSe nanocrystals of the nanoink through step-by-step mixing of the reactants was investigated. To achieve the ideal stoichiometry of Cu(In0.7 Ga0.3 )Se2 to tune the bandgap and to fabricate high-efficiency photovoltaic cells, the synthetic parameters, the concentration of hydrazine, and the amount used of the gallium precursor were investigated. As the hydrazine concentration increased, gallium loss was observed in the CIGSe product. The gallium content in the reactant mixture strongly affected the metal stoichiometry of the prepared CIGSe nanocrystals. The nanoink solution based fabrication of thin-film photovoltaic cells was also explored, and the resulting device showed a conversion efficiency of 5.17 %.
开发了一种基于纳米墨水的工艺，作为制造铜铟镓硒 (CIGSe) 薄膜光伏电池的低成本方法。通过逐步混合反应物，研究了纳米墨水的 CIGSe 纳米晶的超声化学合成。为了实现 Cu(In0.7Ga0.3)Se2 的理想化学计量比，以调整带隙并制造高效光伏电池，研究了合成参数、水合肼的浓度和使用的镓前体的量。随着水合肼浓度的增加，CIGSe 产物中观察到镓的损失。反应物混合物中的镓含量强烈影响所制备的 CIGSe 纳米晶的金属化学计量比。还探索了基于纳米墨水的薄膜光伏电池的制造，所得器件的转换效率为 5.17%。
