Improved photoinduced charge carriers separation in organic-inorganic hybrid photovoltaic devices

2010 ◽  
Vol 97 (3) ◽  
pp. 033309 ◽  
Author(s):  
Yana Vaynzof ◽  
Dinesh Kabra ◽  
Lihong Zhao ◽  
Peter K. H. Ho ◽  
Andrew T.-S. Wee ◽  
...  
Keyword(s):  
Charge Carriers ◽  
Photovoltaic Devices ◽  
Inorganic Hybrid ◽  
Photoinduced Charge

scholarly journals Photoinduced charge carriers in conjugated polymer–fullerene composites studied with light-induced electron-spin resonance

1999 ◽  
Vol 59 (12) ◽  
pp. 8019-8025 ◽  
Author(s):  
V. Dyakonov ◽  
G. Zoriniants ◽  
M. Scharber ◽  
C. J. Brabec ◽  
R. A. J. Janssen ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Conjugated Polymer ◽  
Charge Carriers ◽  
Spin Resonance ◽  
Photoinduced Charge

scholarly journals Characteristics of A Hybrid Detector Combined with A Perovskite Active Layer for Indirect X-ray Detection

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6872
Author(s):  
Hailiang Liu ◽  
Jehoon Lee ◽  
Jungwon Kang
Keyword(s):  
Surface Roughness ◽  
Active Layer ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Lower Surface ◽  
Short Circuit Current Density ◽  
Charge Carriers ◽  
Inorganic Hybrid ◽  
X Ray ◽  
Hybrid Detector

In this study, we investigated the characteristics of an organic-inorganic hybrid indirect-type X-ray detector with a CH3NH3PbI3 (MAPbI3) perovskite active layer. A layer with a thickness of 192 nm annealed at 100 °C showed higher absorption, higher crystallinity, and lower surface roughness than did perovskite layers made under different conditions. In the indirect X-ray detector, a scintillator coupled with the detector to convert X-ray photons to visible photons, and the converted photons were absorbed by the active layer to generate charge carriers. The detector with the optimized MAPbI3 (192 nm thick and 100 °C annealing condition) active layer was coupled with a CsI(Tl) scintillator which consisted of 400 μm thick CsI and 0.5 mm thick Al, and achieved the highest sensitivity, i.e., 2.84 mA/Gy·cm2. In addition, the highest short-circuit current density (JSC), i.e., 18.78 mA/cm2, and the highest mobility, i.e., 2.83 × 10−4 cm2/V·s, were obtained from the same detector without the CsI(Tl) scintillator.

scholarly journals Synthesis and enhanced photocatalytic performance of 0D/2D CuO/tourmaline composite photocatalysts

2020 ◽  
Vol 11 ◽  
pp. 407-416 ◽  
Author(s):  
Changqiang Yu ◽  
Min Wen ◽  
Zhen Tong ◽  
Shuhua Li ◽  
Yanhong Yin ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Contaminants ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Molecular Vibration ◽  
Surface Element ◽  
Composite Photocatalysts ◽  
Excellent Photocatalytic Activity ◽  
Photoinduced Charge ◽  
Facile Hydrothermal Process

Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, a CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was successfully obtained via a facile hydrothermal process, and its photocatalytic activity was evaluated by the degradation of methylene blue (MB). Surface element valence state and molecular vibration characterization revealed that CuO chemically interacted with tourmaline via Si–O–Cu bonds. The specific surface area of the CuO/tourmaline composite (23.60 m2 g−1) was larger than that of the pristine CuO sample (3.41 m2 g−1). The CuO/tourmaline composite exhibited excellent photocatalytic activity for the degradation of MB, which was ascribed to the increase in the quantity of the adsorption-photoreactive sites and the efficient utilization of the photoinduced charge carriers. This study provides a facile strategy for the construction of 0D/2D CuO structures and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in water.

Quantum Dot-Single Wall Carbon Nanotube Complexes for Polymeric Photovoltaics

2004 ◽  
Vol 836 ◽  
Author(s):  
Brian J. Landi ◽  
Stephanie L. Castro ◽  
Chris M. Evans ◽  
Herbert J. Ruf ◽  
Sheila G. Bailey ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Nanotube ◽  
Charge Carriers ◽  
Covalent Attachment ◽  
Mercaptoacetic Acid ◽  
Optical Absorption Spectroscopy ◽  
Synthetic Approach ◽  
Spectroscopy Data ◽  
Photovoltaic Devices ◽  
Transmission Electron

ABSTRACTThe ability to dissociate the photo-generated excitons and transport the resulting charge carriers are the major impediments in improving the efficiency of polymeric solar cells. In order to simultaneously address both of these issues, we have investigated the use of quantum dotsingle wall carbon nanotube (QD-SWNT) complexes as a suitable nanomaterial dopant in these devices. The formation of CdSe-SWNT complexes occurred through covalent attachment of carboxylic acid-functionalized SWNTs with CdSe-aminoethanethiol (AET) quantum dots. An additional synthetic approach was evaluated using both electrostatic and covalent attachment schemes for CuInS2-mercaptoacetic acid (MA) quantum dots and amine terminated SWNTs. The efficacy of each approach is discussed, including the necessary transmission electron microscopy (TEM) and optical absorption spectroscopy data to probe the interactions between nanomaterials. The potential effects of charge transfer between components may have important implications in the efficiency of these materials for polymeric photovoltaic devices.

scholarly journals A polar mineral tourmaline enables synthesis of 0D/2D CuO photocatalyst with enhanced photocatalytic activity

2020 ◽  
Author(s):  
Changqiang Yu ◽  
Min Wen ◽  
Zhen Tong ◽  
Shuhua Li ◽  
Yanhong Yin ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Superoxide Radical ◽  
Aqueous Suspension ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Two Dimensional ◽  
Efficient Utilization ◽  
Composite Photocatalysts ◽  
Photoinduced Charge ◽  
Facile Hydrothermal Process

    Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, the CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was obtained via a facile hydrothermal process. CuO chemically interacted with tourmaline via Si-O-Cu bond. The specific surface area of the CuO/tourmaline composite (23.60 m2 g-1) was larger than that of pristine CuO (3.41 m2 g-1). Three predominant reactive species of superoxide radical (O2 •-), hydroxyl radical (•OH), and h+ were generated by the CuO/tourmaline composite aqueous suspension system under light irradiation. The CuO/tourmaline composite exhibited excellent photocatalytic capacity for the decomposition of organic pollutants, which was ascribed to the increase in the quantity of adsorption-photoreactive sites and the efficient utilization of photoinduced charge carriers benefited from tourmaline. This study offered a facile strategy for the construction of 0D/2D CuO structure and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in waster.

A new type of photomagnetic system: photoinduced charge transfer in polyoxometalate-based organic–inorganic hybrid

2016 ◽  
Vol 45 (6) ◽  
pp. 2422-2425 ◽  
Author(s):  
Qiao Gao ◽  
Fengyan Li ◽  
Zhixia Sun ◽  
Lin Xu ◽  
Minghui Sun
Keyword(s):  
Charge Transfer ◽  
Photoinduced Charge Transfer ◽  
Inorganic Hybrid ◽  
Magnetic Transformation ◽  
New Type ◽  
Photoinduced Charge

A new photomagnetic system having the magnetic transformation from diamagnetism to paramagnetism in the polyoxometalate-based organic–inorganic hybrid has been created.

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