Entity

Time filter

Source Type


Fu P.,Dalian National Laboratory for Clean Energy | Fu P.,University of Chinese Academy of Sciences | Yang D.,Dalian National Laboratory for Clean Energy | Yang D.,University of Chinese Academy of Sciences | And 5 more authors.
Science China Chemistry | Year: 2015

We assembled a ternary blend bulk heterojunction polymer solar cell (PSCs) containing P3HT (donor) and PC61BM (acceptor) incorporated with a dihexyl-quaterthiophene (DH4T) small molecule oligomer as a third component. By optimizing the contents of DH4T, we increased the power conversion efficiency of ternary P3HT:DH4T:PC61BM PSCs to 4.17% from 3.44% of binary P3HT:PC61BM PSCs under AM 1.5 G of 100 mW/cm2 intensity. The major improvement is from the increase of the short circuit current and fill factor that is due to the increased light absorption at short wavelength, the balanced charge carrier transportation and the enhanced hole evacuation by a DH4T-enriched layer at the anode interface. In this work, we demonstrate that the efficiency of the PSCs can be enhanced by using low-bandgap conjugated polymer and its oligomer as donors and fullerene derivatives as acceptors. © 2015 Science China Press and Springer-Verlag Berlin Heidelberg.


Fu P.,State Key Laboratory of Catalysis | Yang D.,State Key Laboratory of Catalysis | Zhang F.,Key Laboratory of Luminescence and Optical Information | Yu W.,State Key Laboratory of Catalysis | And 2 more authors.
Science China Chemistry | Year: 2015

We assembled a ternary blend bulk heterojunction polymer solar cell (PSCs) containing P3HT (donor) and PC61BM (acceptor) incorporated with a dihexyl-quaterthiophene (DH4T) small molecule oligomer as a third component. By optimizing the contents of DH4T, we increased the power conversion efficiency of ternary P3HT:DH4T:PC61BM PSCs to 4.17% from 3.44% of binary P3HT:PC61BM PSCs under AM 1.5 G of 100 mW/cm2 intensity. The major improvement is from the increase of the short circuit current and fill factor that is due to the increased light absorption at short wavelength, the balanced charge carrier transportation and the enhanced hole evacuation by a DH4T-enriched layer at the anode interface. In this work, we demonstrate that the efficiency of the PSCs can be enhanced by using low-bandgap conjugated polymer and its oligomer as donors and fullerene derivatives as acceptors. © 2015 Science China Press and Springer-Verlag Berlin Heidelberg


Peng J.Y.,Beijing Jiaotong University | Zheng Y.,Key Laboratory of Luminescence and Optical Information | Shen J.P.,Key Laboratory of Luminescence and Optical Information | Shi Y.X.,Key Laboratory of Luminescence and Optical Information
Laser Physics | Year: 2013

An original diode-pumped Q-switched and mode-locked solid state Nd:GdVO4 laser is demonstrated. The laser operates with double saturable absorbers and a new coupled laser cavity. The Q-switching envelope width is compressed to be about 15 ns and the mode-locking repetition rate is as low as 90 MHz. © 2013 Astro Ltd.


Feng Z.-H.,Key Laboratory of Luminescence and Optical Information | Hou Y.-B.,Key Laboratory of Luminescence and Optical Information | Shi Q.-M.,Key Laboratory of Luminescence and Optical Information | Qin L.-F.,Key Laboratory of Luminescence and Optical Information | And 6 more authors.
Chinese Physics B | Year: 2010

In the process of fabrication of polymer photovoltaic (PV) devices, poly (3, 4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) thin film, acting as an anode buffer layer, is spin-coated under the action of an electric field. The PV devices with a PEDOT:PSS layer spin-coated under the action of a static electric field exhibit improved short-circuit current density (J sc) and power conversion efficiency (PCE). The investigation of morphology shows that the appropriate intensity of the electric field can increase the roughness of the surface of the PEDOT:PSS layer, which results in improved contact between the anode and hole transport layer and thus enhances the Jsc of the devices. Chemical analysis is also provided by x-ray photoelectron spectroscopy (XPS) spectra. © 2010 Chinese Physical Society and IOP Publishing Ltd.


Li Z.H.,Beijing Jiaotong University | Li Z.H.,Key Laboratory of Luminescence and Optical Information | Peng J.Y.,Beijing Jiaotong University | Peng J.Y.,Key Laboratory of Luminescence and Optical Information | And 2 more authors.
Optics and Laser Technology | Year: 2014

In this paper we report on a mode-locked self-Raman 1.17 μm Nd:GdVO 4 laser. We successfully achieved stable CW mode-locked pulse in a diode-pumped self-Raman Nd:GdVO4 laser with a novel design of cavity included a dichroic mirror used in a special way. With an incident pump power of 10 W, the average output powers was up to 103 mW at a repetition rate of 145 MHz. © 2013 Published by Elsevier Ltd.

Discover hidden collaborations