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Synthesis and Nanostructures of Metal Selenide Precursors for Cu(In,Ga)Se 2 Thin‐Film Solar Cells
Author(s) -
Cha JiHyun,
Noh Se Jin,
Jung DukYoung
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201403464
Subject(s) - selenide , materials science , nanostructure , copper indium gallium selenide solar cells , thin film , nanotechnology , metal , quantum dot solar cell , solar cell , chemical engineering , selenium , optoelectronics , metallurgy , polymer solar cell , engineering
Abstract A nanoink solution‐based process was developed as a low‐costing method for the fabrication of Cu(In,Ga)Se 2 (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(In 0.7 Ga 0.3 )Se 2 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 %.