| 초록 |
In this study, solar absorber Cu2ZnSnS4 (CZTS) films were synthesized via simple chemical bath deposition (CBD) by using RNA nucleobase uracil as the functional building block. The functional bonding sites of uracil, i.e., C=O and N–H, played a vital role to direct the inorganic–organic functional assembly of metals-uracil-quartet architectures by non-covalent interactions. Stable metal–uracil complexes drastically affected the growth kinetics, enhancing the uniform delivery of multimetal components into films and supressing the undesirable formation of CuS particles. Controllable manner, addition of 0.05 and 0.5 M uracil, kesterite CZTS films with adensely packed smooth surface morphology and significantly improved photoconductive performance were obtained, with desirable bandgap energies of ~1.45 eV. The developed RNA-nucleobase-mediated CBD method demonstrates promise as multicomponent compound absorber films, including CZTS and CuInGaSe2, in cost-effective solar cells. |
