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YU HUANG-ZHONG1,* , GE YUN-CHENG1, DONG YI-FAN1, LIANG WEN-YAO1
The solar cells based on different composition ratio blends of poly( 3-hexylthiophene) (P3HT) as donors and [6，6]-phenyl C61 –butyric acid methyl ester (PCBM) as acceptors are fabricated. Annealing treatment effects on the performances of solar cells based on different composition ratio blend systems are analyzed by ultraviolet-visible absorption spectroscopy (UV-vis), photoluminescence spectroscopy (PL) and the dark J –V characteristics. The results show that as PCBM weight increases (P3HT/PCBM=2:1,1:1,1:2), 400-650 nm vibronic absorption peaks intensity attributed to the P3HT transition increase, but photoluminescence spectra intensity lower, and the open circuit voltage of solar cells also increases. The voltage at which the transition from the exponential region to space charge limited behavior in the dark J –V characteristics also increases with the increase in the PCBM concentration. 130 oC heat treatment produces different results on the performance of solar cells based on different proportions of P3HT:PCBM system. We discuss the causes of these phenomena by UV-vis absorption, PL spectroscopy and dark current-voltage curve..
Annealing treatment, Different composition, Solar cell, Performance.
YU HUANG-ZHONG, GE YUN-CHENG, DONG YI-FAN, LIANG WEN-YAO, Annealing treatment effects on the performances of solar cells based on different composition systems, Optoelectronics and Advanced Materials - Rapid Communications, 9, 3-4, March-April 2015, pp.372-376 (2015).
Submitted at: June 14, 2014
Accepted at: March 19, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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