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Título del libro: 2019 Ieee International Autumn Meeting On Power, Electronics And Computing, Ropec 2019
Título del capítulo: Electrical characteristics of ternary solar cells based on PTB7:PCBM:ICBA

Autores UNAM:
ALEJANDRA CASTRO CARRANZA; JAIRO CESAR NOLASCO MONTAÑO;
Autores externos:

Idioma:

Año de publicación:
2019
Palabras clave:

Capacitance; Heterojunctions; Open circuit voltage; Spectroscopy; Thorium compounds; Bulk heterojunction solar cells; Capacitance voltage characteristic; Electrical characteristic; Electron acceptor; Experimental values; Impedance spectroscopy; Optimum concentration; Recombination time; Solar cells


Resumen:

Ternary bulk heterojunction solar cells based on the electron donor PTB7-Th and the electron acceptors PC71 BM and ICBA are fabricated with an optimum concentration of ICBA of 15 wt% and characterized electrically. Current density-voltage (J-V) and impedance spectroscopy characteristics are discussed. Characteristics under dark conditions are modeled to find a well predictable value of the open circuit voltage (VOC) which is compared with the experimental value. From impedance spectroscopy, specifically from capacitance-voltage characteristics, a relaxation or recombination time between 10-3 and 10-5s for charge carriers is observed. Our results show that this analysis allows to verify whether recombination determining VOC also determines recombination under dark conditions for ternary solar cells. © 2019 IEEE.


Entidades citadas de la UNAM: