ชื่อเรื่อง | : | Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment |
นักวิจัย | : | Solanki, Ankur , Wu, Bo , Salim, Teddy , Yeow, Edwin Kok Lee , Lam, Yeng Ming , Sum, Tze Chien |
คำค้น | : | DRNTU::Engineering::Materials::Organic/Polymer electronics |
หน่วยงาน | : | Nanyang Technological University, Singapore |
ผู้ร่วมงาน | : | - |
ปีพิมพ์ | : | 2557 |
อ้างอิง | : | Solanki, A., Wu, B., Salim, T., Yeow, E. K. L., Lam, Y. M., & Sum, T. C. (2014). Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment. The journal of physical chemistry C, 118(21), 11285-11291. , http://hdl.handle.net/10220/25131 , http://dx.doi.org/10.1021/jp5040097 |
ที่มา | : | - |
ความเชี่ยวชาญ | : | - |
ความสัมพันธ์ | : | The journal of physical chemistry C |
ขอบเขตของเนื้อหา | : | - |
บทคัดย่อ/คำอธิบาย | : | Organic solar cell (OSC) devices based on predominantly poly(3-hexylthiophene-2,5-diyl) (P3HT) nanofibers (NFs) exhibit inferior device performance compared to that of their conventional nanodomain P3HT:PCBM systems, which is credited to the low interfibrillar mobility between the NFs [Kurniawan, M.; et al. J. Phys. Chem. C2012, 116, 18015]. To improve the charge transport of these devices, external electric field (E-field) treatment of the active layer is performed in a bid to align the random polymer chains between the NFs perpendicular to the electrode. Extensive device testing revealed a 22.7% improvement in power conversion efficiency and higher mobilities (37.5% improvement) for the E-field-treated devices compared to those for the control. Transient absorption spectroscopy shows an improved initial generation of carriers and formation of polarons in the E-field-treated samples over those in the control samples in the femtosecond–nanosecond time scale. However, in the absence of any sweep-out voltage in the E-field-treated films, a higher recombination rate in the nanosecond–microsecond time scale is observed. Concomitant with the improved device efficiencies and higher mobilities measured in the E-field-treated devices and the higher recombination rate over the nanosecond–microsecond time scale in the E-field-treated films, we assert that the E-field treatment improved charge mobility and transport of P3HT-NF:PCBM through improved orientation of the polymer chains in the amorphous P3HT phase coexisting with the NFs. |
บรรณานุกรม | : |
Solanki, Ankur , Wu, Bo , Salim, Teddy , Yeow, Edwin Kok Lee , Lam, Yeng Ming , Sum, Tze Chien . (2557). Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Solanki, Ankur , Wu, Bo , Salim, Teddy , Yeow, Edwin Kok Lee , Lam, Yeng Ming , Sum, Tze Chien . 2557. "Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Solanki, Ankur , Wu, Bo , Salim, Teddy , Yeow, Edwin Kok Lee , Lam, Yeng Ming , Sum, Tze Chien . "Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print. Solanki, Ankur , Wu, Bo , Salim, Teddy , Yeow, Edwin Kok Lee , Lam, Yeng Ming , Sum, Tze Chien . Performance improvements in polymer nanofiber/fullerene solar cells with external electric field treatment. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.
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