Figure 5 | Scientific Reports

Figure 5

From: Enhancing the photovoltaic performance of hybrid heterojunction solar cells by passivation of silicon surface via a simple 1-min annealing process

Figure 5

PCEs of (a) the PEDOT:PSS/n-Si heterojunction solar cells and (b) the CNT/n-Si heterojunction solar cells as a function of storage time in the air without illumination and encapsulation. n-Si substrates were passivated by annealing at 550 °C for 1 min. Three to five cells were fabricated and evaluated for each type, and the error bars show the standard deviation. The insets show the time evolution of the J–V curves of a typical cell for each type.

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