A strategy to achieve superior photocurrent by Cu-doped quantum dot sensitized solar cells

Huang, Zongbo; Zou, Xiaoping; Zhou, Hongquan

doi:10.1016/j.matlet.2012.12.095

Cited by 62 publications

(22 citation statements)

References 10 publications

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“…The broad absorption in the visible and higher photoconversion efficiency highlights the importance of In doping of the metal chalcogenide films. Very recently, the highest short circuit current density with a maximum EQE (74.6% at 470 nm) of PbS : Hg QD sensitized solar cell was demonstrated to change it [28]. We can refer it to some references [34][35][36][37][38][39].…”

Section: Resultsmentioning

confidence: 99%

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Superior Photocurrent of Quantum Dot Sensitized Solar Cells Based on PbS : In/CdS Quantum Dots

Huang

Zou

2015

International Journal of Photoenergy

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PbS : In and CdS quantum dots (QDs) are sequentially assembled onto a nanocrystalline TiO2film to prepare a PbS : In/CdS cosensitized photoelectrode for QD sensitized solar cells (QDSCs). The results show that PbS : In/CdS QDs have exhibited a significant effect in the light harvest and performance of the QDSC. In the cascade structure of the electrode, the reorganization of energy levels between PbS and TiO2forms a stepwise structure of band-edge levels which is advantageous to the electron injection into TiO2. Energy conversion efficiency of 2.3% is achieved with the doped electrode, under the illumination of one sun (AM1.5, 100 mW cm2). Besides, a remarkable short circuit current density (up to 23 mA·cm−2) is achieved in the resulting PbS : In/CdS quantum dot sensitized solar cell, and the related mechanism is discussed.

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Section: Resultsmentioning

confidence: 99%

“…In/CdS Electrode. The fabrication methods are based on our previous study for Cu-doped PbS [28]. In a typical experiment, the TiO 2 electrode was prepared by the screen printing with an average size of 25 nm TiO 2 paste onto the fluorine-doped tin oxide (FTO) glass (thickness: 2.2 mm, Pilkington, 14 Ω/square).…”

Section: Fabrication Of Pbsmentioning

confidence: 99%

Superior Photocurrent of Quantum Dot Sensitized Solar Cells Based on PbS : In/CdS Quantum Dots

Huang

Zou

2015

International Journal of Photoenergy

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“…Zero-dimensional semiconductor material is an attractive platform for optoelectronic nanodevices [1] due to their particular optoelectronic properties and potential applications [2][3][4][5]. Coreshell type hybrid structure, as a typical structure of quantum dots system, has important theoretical research value and exhibits novel properties [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and investigation of novel ZnO–CuO core-shell nanospheres

Zhu

Xia

et al. 2016

Materials Letters

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a b s t r a c tIn this work, ZnO-CuO core-shell hybrid nanospheres with well-crystalline wurzite ZnO core and monoclinic CuO shell were successfully synthesized through a two-stage solution process. The as-prepared nanocomposites were carefully characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and UV/Vis diffuse reflection spectroscopy (DRS). Compared with bare ZnO cores, the ZnO-CuO core-shell 0-dimensional nanocomposites had greatly enhanced absorption strength and dramatically broadened optical response ranging from near-ultraviolet to visible light, which was probably attributed to heterojunction between n-ZnO core and p-CuO shell and defects originated from synthetic procedure. The as-synthesized p-CuO/ n-ZnO core-shell hybrid structure may lead to tantalizing applications including solar energy materials, LED and optical sensor.

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“…3,[20][21][22] The d-dots are the ideal emissive materials for applications requiring signi¯cant power and/or high density of nanocrystals, such as biological imaging 21,[23][24][25] light emitting diode (LED), 1,12,26 optoelectronics, 24-27 laser 1 and solid-state lighting. 28 On account of their potential applications, Mn:ZnSe d-dots, clusters have been investigated via theoretical calculations 29,30 and experiments. [1][2][3][4][31][32][33] Many scholars have investigated it through di®erent approaches.…”

Section: Introductionmentioning

confidence: 99%

Simulation-Based Optical Spectra Analyses and Synthesis of Highly Monodispersed Mn-Doped ZnSe Nanocrystal

Abib

Yao

et al. 2016

NANO

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Geometrical structures of (ZnSe) n , n ¼ 3x, (x ¼ 1-4) and (Mn x Zn 2x Se 3x Þ, (x ¼ 1À4Þ clusters were calculated using density functional theory (DFT). Optical/absorption spectra, Raman spectra, HOMO-LUMO gap energy and binding energy of each cluster were calculated. The calculated results show the red shift of the optical/absorption spectra band caused by the manganese atoms doped in ZnSe clusters, and the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap energy value is decreased. Furthermore, we realized highly monodispersed manganese-doped zinc selenide quantum dots (Mn:ZnSe d-dots) experimentally by using a convenient route. The as-synthesized Mn:ZnSe d-dots were characterized by UV-Vis absorption, photoluminescence (PL), X-ray di®raction (XRD), TEM and HRTEM. The experimental results revealed that the as-prepared Mn:ZnSe d-dots with zincblende structure have an average size of about 3.9 nm.

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A strategy to achieve superior photocurrent by Cu-doped quantum dot sensitized solar cells

Cited by 62 publications

References 10 publications

Superior Photocurrent of Quantum Dot Sensitized Solar Cells Based on PbS : In/CdS Quantum Dots

Superior Photocurrent of Quantum Dot Sensitized Solar Cells Based on PbS : In/CdS Quantum Dots

Synthesis and investigation of novel ZnO–CuO core-shell nanospheres

Simulation-Based Optical Spectra Analyses and Synthesis of Highly Monodispersed Mn-Doped ZnSe Nanocrystal

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