Colloidal synthesis and characterization of Bi2S3 nanoparticles for photovoltaic applications

5th Young Researcher Meeting, Trieste 2014

Piras, R.^1 ; Aresti, M.^1 ; Saba, M.^1 ; Marongiu, D.^1 ; Mula, G.^1 ; Quochi, F.^1 ; Mura, A.^1 ; Cannas, C.^2 ; Mureddu, M.^2 ; Ardu, A.^2 ; Ennas, G.^2 ; Calzia, V.^3 ; Mattoni, A.^3 ; Musinu, A.^2 ; Bongiovanni, G.^1

Department of Physics, University of Cagliari, Cittadella Universitaria, Monserrato (CA)

09042, Italy^1

Department of Chemistry, University of Cagliari, Cittadella Universitaria, Monserrato (CA)

09042, Italy^2

CNR-IOM, University of Cagliari, Cittadella Universitaria, Monserrato (CA)

09042, Italy^3

关键词: Colloidal quantum dots;    Colloidal synthesis;    Environmentally benign;    N-type semiconductors;    Organometallic synthesis;    Photovoltaic applications;    Solution processable;    Synthesis parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/566/1/012017/pdf
DOI  :  10.1088/1742-6596/566/1/012017

来源: IOP

【 摘 要 】

Bismuth sulfide is a promising n-type semiconductor for solar energy conversion. We have explored the colloidal synthesis of Bi2S3nanocrystals, with the aim of employing them in the fabrication of solution-processable solar cells and to replace toxic heavy metals chalcogenides like PbS or CdS, that are currently employed in such devices. We compare different methods to obtain Bi2S3colloidal quantum dots, including the use of environmentally benign reactants, through organometallic synthesis. Different sizes and shapes were obtained according to the synthesis parameters and the growth process has been rationalized by comparing the predicted morphology with systematic physical-chemistry characterization of nanocrystals by X-ray diffraction, FT-IR spectroscopy, Transmission Electron Microscopy (TEM).