Limits...
Enhanced efficiency of inverted polymer solar cells by using solution-processed TiOx/CsOx cathode buffer layer.

Zhou X, Fan X, Sun X, Zhang Y, Zhu Z - Nanoscale Res Lett (2015)

Bottom Line: In this work, a double-buffer film of TiOx coated with CsOx (TiOx/CsOx) was solution prepared to be applied in poly(3-hexylthiophene):indene-C60 bisadduct (P3HT:ICBA) and P3HT:[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) inverted polymer solar cells (PSCs).Moreover, the P3HT:ICBA and P3HT:PCBM photovoltaic devices with the double-buffer film showed the best power conversion efficiency up to 5.65% and 3.76%, respectively.Our results not only present that the double-buffer film is superior than the single film of TiOx and CsOx, but also imply that the solution-processed film has a potential to be generally used in roll-to-roll processed organic photovoltaic devices.

View Article: PubMed Central - PubMed

Affiliation: School of Physics and Electromechnical Engineering, Zhoukou Normal University, Zhoukou, 466001 People's Republic of China.

ABSTRACT
In this work, a double-buffer film of TiOx coated with CsOx (TiOx/CsOx) was solution prepared to be applied in poly(3-hexylthiophene):indene-C60 bisadduct (P3HT:ICBA) and P3HT:[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) inverted polymer solar cells (PSCs). Compared with TiOx films and CsOx films, the TiOx/CsOx double-buffer film exhibited a favorable energy-level alignment among TiOx, CsOx, and the electron acceptor of PCBM or ICBA a better surface morphology; and an enhanced wetting and adhesion property with a contact angle of 21.0°, leading to a higher electron mobility of 5.52 × 10(-3) cm(2) V(-1)·s(-1). Moreover, the P3HT:ICBA and P3HT:PCBM photovoltaic devices with the double-buffer film showed the best power conversion efficiency up to 5.65% and 3.76%, respectively. Our results not only present that the double-buffer film is superior than the single film of TiOx and CsOx, but also imply that the solution-processed film has a potential to be generally used in roll-to-roll processed organic photovoltaic devices.

No MeSH data available.


Related in: MedlinePlus

J-Vcharacteristics of the P3HT:ICBA-based inverted PSCs (a) and the P3HT:PCBM-based inverted PSCs (b) with different film, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4385094&req=5

Fig2: J-Vcharacteristics of the P3HT:ICBA-based inverted PSCs (a) and the P3HT:PCBM-based inverted PSCs (b) with different film, respectively.

Mentions: Figure 2a shows the J-V characteristic curves of the P3HT:ICBA inverted PSCs with a film of TiOx, CsOx, and TiOx/CsOx under simulated AM 1.5 G solar illumination of 100 mW cm−2. For comparison, more than 30 solar cells were fabricated and characterized to confirm the performance trends. It presents that the inverted PSCs with CsOx film (devices A) show a relatively poor PCE of 4.91% with VOC of 0.82 V, JSC of 9.79 mA cm−2, and fill factor (FF) of 61.2%. Compared with the devices A, the PSCs with TiOx film (devices B) yield an equipotent PCE of 4.95%, with a lower VOC of 0.76 V, a higher JSC of 10.82 mA cm−2, and a FF of 60.2%. It is considered that the higher JSC of 10.82 mA cm−2 is attributed to the exciton- and hole-blocking ability of the TiOx film resulted from its favorable conduction band, as shown in Figure 1b. For the PSCs with the TiOx/CsOx film (devices C), the highest PCE of 5.65% is achieved with VOC of 0.84 V, JSC of 10.95 mA cm−2, and FF of 61.4%, demonstrating a good combination of TiOx and CsOx, which compensates the loss in VOC of devices B as well as in JSC of devices A, respectively. Such photovoltaic performance parameters of the inverted PSCs are summarized in Table 1.Figure 2


Enhanced efficiency of inverted polymer solar cells by using solution-processed TiOx/CsOx cathode buffer layer.

Zhou X, Fan X, Sun X, Zhang Y, Zhu Z - Nanoscale Res Lett (2015)

J-Vcharacteristics of the P3HT:ICBA-based inverted PSCs (a) and the P3HT:PCBM-based inverted PSCs (b) with different film, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385094&req=5

Fig2: J-Vcharacteristics of the P3HT:ICBA-based inverted PSCs (a) and the P3HT:PCBM-based inverted PSCs (b) with different film, respectively.
Mentions: Figure 2a shows the J-V characteristic curves of the P3HT:ICBA inverted PSCs with a film of TiOx, CsOx, and TiOx/CsOx under simulated AM 1.5 G solar illumination of 100 mW cm−2. For comparison, more than 30 solar cells were fabricated and characterized to confirm the performance trends. It presents that the inverted PSCs with CsOx film (devices A) show a relatively poor PCE of 4.91% with VOC of 0.82 V, JSC of 9.79 mA cm−2, and fill factor (FF) of 61.2%. Compared with the devices A, the PSCs with TiOx film (devices B) yield an equipotent PCE of 4.95%, with a lower VOC of 0.76 V, a higher JSC of 10.82 mA cm−2, and a FF of 60.2%. It is considered that the higher JSC of 10.82 mA cm−2 is attributed to the exciton- and hole-blocking ability of the TiOx film resulted from its favorable conduction band, as shown in Figure 1b. For the PSCs with the TiOx/CsOx film (devices C), the highest PCE of 5.65% is achieved with VOC of 0.84 V, JSC of 10.95 mA cm−2, and FF of 61.4%, demonstrating a good combination of TiOx and CsOx, which compensates the loss in VOC of devices B as well as in JSC of devices A, respectively. Such photovoltaic performance parameters of the inverted PSCs are summarized in Table 1.Figure 2

Bottom Line: In this work, a double-buffer film of TiOx coated with CsOx (TiOx/CsOx) was solution prepared to be applied in poly(3-hexylthiophene):indene-C60 bisadduct (P3HT:ICBA) and P3HT:[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) inverted polymer solar cells (PSCs).Moreover, the P3HT:ICBA and P3HT:PCBM photovoltaic devices with the double-buffer film showed the best power conversion efficiency up to 5.65% and 3.76%, respectively.Our results not only present that the double-buffer film is superior than the single film of TiOx and CsOx, but also imply that the solution-processed film has a potential to be generally used in roll-to-roll processed organic photovoltaic devices.

View Article: PubMed Central - PubMed

Affiliation: School of Physics and Electromechnical Engineering, Zhoukou Normal University, Zhoukou, 466001 People's Republic of China.

ABSTRACT
In this work, a double-buffer film of TiOx coated with CsOx (TiOx/CsOx) was solution prepared to be applied in poly(3-hexylthiophene):indene-C60 bisadduct (P3HT:ICBA) and P3HT:[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) inverted polymer solar cells (PSCs). Compared with TiOx films and CsOx films, the TiOx/CsOx double-buffer film exhibited a favorable energy-level alignment among TiOx, CsOx, and the electron acceptor of PCBM or ICBA a better surface morphology; and an enhanced wetting and adhesion property with a contact angle of 21.0°, leading to a higher electron mobility of 5.52 × 10(-3) cm(2) V(-1)·s(-1). Moreover, the P3HT:ICBA and P3HT:PCBM photovoltaic devices with the double-buffer film showed the best power conversion efficiency up to 5.65% and 3.76%, respectively. Our results not only present that the double-buffer film is superior than the single film of TiOx and CsOx, but also imply that the solution-processed film has a potential to be generally used in roll-to-roll processed organic photovoltaic devices.

No MeSH data available.


Related in: MedlinePlus