Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Zhipeng Huo is active.

Publication


Featured researches published by Zhipeng Huo.


Journal of Physical Chemistry B | 2008

Low molecular mass organogelator based gel electrolyte with effective charge transport property for long-term stable quasi-solid-state dye-sensitized solar cells.

Zhipeng Huo; Song-Yuan Dai; Changneng Zhang; Fantai Kong; Xiaqin Fang; Lei Guo; Weiqing Liu; Linhua Hu; Xu Pan; Kongjia Wang

Stable quasi-solid-state dye-sensitized solar cells (DSC) were fabricated using 12-hydroxystearic acid as a low molecular mass organogelator (LMOG) to form gel electrolyte. TEM image of the gel exhibited the self-assembled network constructed by the LMOG, which hindered flow and volatilization of the liquid. The formation of less-mobile polyiodide ions such as I 3 (-) and I 5 (-) confirmed by Raman spectroscopy increased the conductivity of the gel electrolytes by electronic conduction process, which should be rationalized by the Grotthuss-type electron exchange mechanism caused by rather packed polyiodide species in the electrolytes. The results of the accelerated aging tests showed that the gel electrolyte based dye-sensitized solar cell could retain over 97% of its initial photoelectric conversion efficiency value after successive heating at 60 degrees C for 1000 h and device degradation was also negligible after one sun light soaking with UV cutoff filter for 1000 h.


Chemical Communications | 2013

Efficient panchromatic inorganic–organic heterojunction solar cells with consecutive charge transport tunnels in hole transport material

Haiwei Chen; Xu Pan; Weiqing Liu; Molang Cai; Dongxing Kou; Zhipeng Huo; Xiaqin Fang; Songyuan Dai

A simple solution-processing method was employed to fabricate panchromatic mp-TiO2/CH3NH3PbI3/P3HT-MWNT/Au solar cells. MWNTs in a P3HT-MWNT composite acted as efficient nanostructured charge transport tunnels and induce crystallization of P3HT, hence significantly enhancing the conductivity of the composite. The fill factor of the hybrid solar cells was greatly enhanced by 26.7%.


Journal of Materials Chemistry | 2015

High-efficiency and stable quasi-solid-state dye-sensitized solar cell based on low molecular mass organogelator electrolyte

Li Tao; Zhipeng Huo; Yong Ding; Yi Li; Songyuan Dai; Lu Wang; Jun Zhu; Xu Pan; Bing Zhang; Jianxi Yao; Mohammad Khaja Nazeeruddin; Michael Grätzel

The highest photoelectric conversion efficiency (9.61%) for a quasi-solid-state DSSC (QS-DSSC) based on a low molecular mass organogelator (LMOG) is achieved using N,N′-1,5-pentanediylbis-dodecanamide as a LMOG in conjunction with a TiO2 photoanode of sub-microspheres sensitized with a high-absorptivity Ru complex (C101). The competition of interfacial kinetic processes between the recombination of the dye cations with photoinjected electrons and the regeneration of the dye cations by I− is investigated by transient adsorption measurements. The data revealed that there is an efficient interfacial charge separation at the TiO2 photoelectrode/electrolyte interface and the dye is rapidly regenerated, which contributes to the high photocurrent. Furthermore, using electrochemical impedance spectroscopy (EIS) and controlled intensity modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS), it is determined that the negative shift of TiO2 conduction band edge of the QS-DSSC contributes to the high Voc. Moreover, the QS-DSSC exhibits significantly improved stability during the accelerated thermal and light-soaking test. During the accelerated aging test, there is almost no change in the short-circuit current density (Jsc) in the QS-DSSC, while the Jsc of the liquid electrolyte based DSSC decreases sharply. These results are very important for the application and commercialization of DSSCs.


Journal of Materials Chemistry | 2013

Multiple adsorption of tributyl phosphate molecule at the dyed-TiO2/electrolyte interface to suppress the charge recombination in dye-sensitized solar cell

Molang Cai; Xu Pan; Weiqing Liu; Jiang Sheng; Xiaqin Fang; Changneng Zhang; Zhipeng Huo; Huajun Tian; Shangfeng Xiao; Songyuan Dai

Electron recombination and dye aggregation at the dyed-TiO2/electrolyte interface are still problems in dye-sensitized solar cell (DSC) research. In this paper, tributyl phosphate (TBpp) as a special additive to modify the dyed-TiO2/electrolyte interface was introduced to enhance the photovoltaic performance. The adsorption mode of TBpp and the interaction between cis-dithiocyanate-N,N′-bis-(4-carboxylate-4-tetrabutylammonium carboxylate-2,2′-bi-pyridine) ruthenium(II) (N719) and TBpp were investigated. It was found that one TBpp parent molecule split into several smaller fragments and formed four anchoring modes on the TiO2 surface. It was very interesting that the molecular cleavage of TBpp and adsorption of N719 assisted each other on the sensitized TiO2 surface. The fragments distributed around N719 result in steric hindrance, consequently hydrogen-bonding among N719 molecules was decreased. The unstable type N719 transformed into stable type N719 accompanied by molecular cleavage of TBpp and the N719 aggregation was reduced. Furthermore, these new fragments were multiply adsorbed on the non-sensitized TiO2 surface to form an insulating barrier layer. Therefore, the electron recombination at the dyed-TiO2/electrolyte interface was restrained. Besides the change of surface configuration, the TiO2 band edge negatively shifted and the rate of electron transport in the TiO2 films decreased with the addition of TBpp. As a result, an increase in the photoelectric conversion efficiency (η) was obtained of almost 40%.


Science China-chemistry | 2013

Ionic liquid crystal-based electrolyte with enhanced charge transport for dye-sensitized solar cells

Xu Pan; Meng Wang; XiaQing Fang; Changneng Zhang; Zhipeng Huo; Songyuan Dai

A room temperature ionic liquid crystal, 1-dodecyl-3-ethylimidazolium iodide (C12EImI), and an ionic liquid, 1-decyl-3-ethylimidazolium iodide (C10EImI), have been synthesized, characterized and employed as the electrolyte for dye-sensitized solar cells (DSSC). The physicochemical properties show that a smectic A (SmA) phase with a lamellar structure is formed in C12EImI. Both C12EImI and C10EImI have good electrochemical and thermal stability facilitating their use in DSSC. The steady-state voltammograms reveal that the diffusion coefficient of I3− in C12EImI is larger than that in C10EImI, which is attributed to the existence of the SmA phase in C12EImI. Because the iodide species are located between the layers of imidazolium cations in C12EImI, exchange reaction-based diffusion is increased with a consequent increase in, the overall diffusion. The electrochemical impedance spectrum reveals that charge recombination at the dyed TiO2/electrolyte interface of a C12EImI-based DSSC is reduced due to the increase in I3− diffusion, resulting in higher open-circuit voltage. Moreover, both short-circuit current density and fill factor of the C12EImI based DSSC increase, as a result of the increasing transport of I3− in C12EImI. Consequently, the photoelectric conversion efficiency of C12EImI-based DSSC is higher than that of the C10EImI-based DSSC.


Journal of Materials Chemistry | 2014

Gel electrolyte materials formed from a series of novel low molecular mass organogelators for stable quasi-solid-state dye-sensitized solar cells

Li Tao; Zhipeng Huo; Yong Ding; Lu Wang; Jun Zhu; Changneng Zhang; Xu Pan; Mohammad Khaja Nazeeruddin; Songyuan Dai; Michael Grätzel

Electrolyte materials are the key components in dye-sensitized solar cells (DSCs) and are very crucial to the performance and long-term stability of DSCs. We developed a series of diamide derivatives as novel low molecular mass organogelators (LMOGs) for DSCs. These LMOGs contain different numbers (2, 6, 5 and 9) of methylene groups (–CH2–) between the two amide carbonyl groups and exhibit distinctive self-assembly behaviors. The gel electrolytes prepared by these LMOGs possess high gel-to-solution transition temperatures (over 100 °C) and the stability of DSCs is largely enhanced. More importantly, the parity of the number of –CH2– and their special molecular arrangements have a remarkable influence on the self-assembly of the gelators resulting in a significantly different morphology, and further influence the photovoltaic performances of DSCs. It is found that the LMOGs containing odd-numbered –CH2– lead to a much better charge transport of the gel electrolytes, inducing a longer electron lifetime and higher incident photon-to-electron conversion efficiency compared with the LMOGs containing even-numbered –CH2–. Finally, a superior quasi-solid-state DSC based on the gelator containing five –CH2– is obtained, which exhibits a photoelectric conversion efficiency of 7.53% and excellent thermal and light-soaking stabilities during accelerated aging tests.


Science China. Materials | 2015

Quasi-solid-state dye sensitized solar cells using supramolecular gel electrolyte formed from two-component low molecular mass organogelators

Zhipeng Huo; Li Tao; Songyuan Dai; Jun Zhu; Changneng Zhang; Shuanghong Chen; Bing Zhang

A novel supramolecular gel electrolyte formed from two-component low molecular mass organogelators was developed and introduced into quasi-solid-state dye sensitized solar cell (QS-DSSC). This supramolecular gel electrolyte system was prepared by using N,N’-1,5-pentanediylbis-dodecanamide and 4-(Boc-aminomethyl)pyridine as co-gelator. Furthermore, the morphologies of the two-component supramolecular gel electrolyte and single-component gel electrolyte were observed by the polarized optical light microscopy, and the charge transport property of the two-component supramolecular gel electrolyte and the kinetic processes of the electron transport/recombination were investigated by the intensity-modulated photocurrent spectroscopy/intensity-modulated photovoltage spectroscopy (IMPS/IMVS). The polarized optical microscopy (POM) revealed that the single-component gel electrolyte was formed as the rod-like fibers, whereas the fibers changed to branched structure in the two-component supramolecular gel electrolyte. Moreover, comparing with the single-component gel electrolyte based QS-DSSC, the electron transport is faster and the electron recombination at the TiO2/electrolyte interface is slower in the two-component supramolecular gel electrolyte based QSDSSC. Consequently, an efficiency of 7.04% was obtained by the two-component supramolecular gel electrolyte based QSDSSC, which is higher than that of the single-component gel electrolyte based QS-DSSC (6.59%).中文摘要本文制备了一种由N,N′-1,5-戊二基双月桂酰胺和4-(Boc-氨基甲基)吡啶作为共胶凝剂的新型超分子凝胶电解质, 并将其应用于准固态染料敏化太阳电池(QS-DSSC)中. 通过偏光显微镜观察超分子凝胶电解质和由N,N′-1,5-戊二基双月桂酰胺制备的单组份凝胶电解质微观形貌的差异, 并通过调制光电流谱/调制光电压谱(IMPS/IMVS)来研究两种凝胶电解质体系中的电子传输/复合动力学过程. 结果表明, 单组份凝胶电解质中的网络结构是由棒状纤维构成, 而在超分子凝胶电解质中出现分叉纤维结构; 与单组份凝胶电解质组装的QS-DSSC相比, 基于超分子凝胶电解质的QS-DSSC内部电子传输更快且电子在TiO2/电解质界面处的复合速率更慢. 最终, 基于超分子凝胶电解质的QS-DSSC获得了7.04%的光电转换效率, 高于基于单组份凝胶电解质的QS-DSSC的光电转换效率(6.59%).


Science China-chemistry | 2015

BiVO4 semiconductor sensitized solar cells

Yi Li; Jun Zhu; Hui Chu; Junfeng Wei; Feng Liu; Mei Lv; Junwang Tang; Bing Zhang; Jianxi Yao; Zhipeng Huo; Linhua Hu; Songyuan Dai

Semiconductor sensitized solar cells (SSSCs) are promising candidates for the third generation of cost-effective photovoltaic solar cells and it is important to develop a group of robust, environment friendly and visible-light-responsive semiconductor sensitizers. In this paper, we first synthesized bismuth vanadate (BiVO4) quantum dots by employing facile successive ionic layer adsorption and reaction (SILAR) deposition technique, which we then used as a sensitizer for solar energy conversion. The preliminary optimised oxide SSSC showed an efficiency of 0.36%, nearly 2 orders of magnitude enhancement compared with bare TiO2, due to the narrow bandgap absorption of BiVO4 quantum dots and intimate contact with the oxide substrate. This result not only demonstrates a simple method to prepare BiVO4 quantum dots based solar cell, but also provides important insights into the low bandgap oxide SSSCs.


Science China. Materials | 2016

Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells

Lu Wang; Zhipeng Huo; Li Tao; Jun Zhu; Shuanghong Chen; Xu Pan; Songyuan Dai

A low molecular mass organogelator (LMOG), N,N′-1,5-pentanediylbis-dodecanamide, was applied to quasi-solid-state dye-sensitized solar cells (QS-DSSCs). The crosslinked gel network was self-assemblied by the LOMG in the liquid electrolyte, and the in situ assembly process of gelator can be obtained by the polarized optical microscopy (POM). On one hand, the network hinders the diffusion of redox species and accelerates the electron recombination at the interface of the TiO2 photoanode/electrolyte. On the other hand, Li+ can interact with the amide carbonyl groups of the gelators and the adsorption of Li+ onto the TiO2 surface decreases, leading to a negative shift of the TiO2 conduction band edge, accelerated electron transport and decreased electron injection efficiency (ηinj) of QS-DSSC. As a result, the incidental photon-to-electron conversion efficiency (IPCE), the short circuit photocurrent density (Jsc) and the open circuit voltage (Voc) of the QS-DSSC are decreased compared with those of the liquid electrolyte based DSSC (L-DSSC), which indicates that the electron recombination plays a great role in the photovoltaic performances of DSSC. Remarkably, the QS-DSSC exhibits excellent thermal and light-soaking stabilities during accelerated aging tests for 1000 h, which is attributed to a great intrinsic stability of the gel electrolyte with a high gel to solution transition temperature (Tgel = 108°C).摘要本文合成了N,N′-1,5-戊二基双月桂酰胺作为有机小分子凝胶剂, 并将其应用于准固态染料敏化太阳电池(QS-DSSC)的电解质材料中.通过偏光显微镜观察到凝胶剂分子在液态电解质中形成交联凝胶网络的原位自组装过程. 一方面, 凝胶网络对氧化还原电对物理扩散的阻碍效应, 加速了电解质/TiO2光阳极界面的电子复合. 另一方面, Li+与凝胶剂分子的酰胺基团发生锂键相互作用, 减少了Li+在TiO2表面的吸附, 使TiO2薄膜内的电子传输加快, 电子注入效率(ηinj)降低, TiO2导带边发生负移. 测试表明, 凝胶电池的开路电压(Voc)、单色光转化效率(IPCE)和短路电流密度(Jsc)均低于液态电解质制备的染料敏化太阳电池(L-DSSC), 与上述分析结果符合, 且说明电解质/TiO2光阳极界面电子复合起了主导作用. 108°C的相转变温度保证了凝胶电解质的本征稳定性, 使得准固态电池在50°C和一个太阳光照条件下连续1000 h的加速老化实验中表现出优良的光热稳定性.


Journal of Nanoscience and Nanotechnology | 2016

Semiconductor Sensitized Solar Cells Based on BiVO4-Sensitized Mesoporous SnO2 Photoanodes.

Yi Li; Jun Zhu; Shuanghong Chen; Feng Liu; Mei Lv; Junfeng Wei; Yang Huang; Zhipeng Huo; Linhua Hu; Junwang Tang; Songyuan Dai

Low cost, stable and visible-light-responsive bismuth vanadate (BiVO4) was used as the light absorbing material to fabricate a low bandgap oxide solar cell on mesoporous SnO2 photoanode. BiVO4 nanoparticles were grown on the mesoporous SnO2 films employing successive ionic layer adsorption and reaction process. The optimized BiVO4 solar cell shows an incident photon to current conversion efficiency of more than 60% at a wide range of visible region (350 nm-450 nm), leading to a power conversion efficiency of 0.56% at AM1.5, 100 mW x cm(-2). This result provides important insights into the low cost and robust oxide solar cells.

Collaboration


Dive into the Zhipeng Huo's collaboration.

Top Co-Authors

Avatar

Songyuan Dai

North China Electric Power University

View shared research outputs
Top Co-Authors

Avatar

Changneng Zhang

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Xu Pan

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Yang Huang

Hebei University of Technology

View shared research outputs
Top Co-Authors

Avatar

Jun Zhu

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Fantai Kong

Hefei Institutes of Physical Science

View shared research outputs
Top Co-Authors

Avatar

Linhua Hu

Hefei Institutes of Physical Science

View shared research outputs
Top Co-Authors

Avatar

Li Tao

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Shuanghong Chen

Hefei Institutes of Physical Science

View shared research outputs
Top Co-Authors

Avatar

Xiaqin Fang

Chinese Academy of Sciences

View shared research outputs
Researchain Logo
Decentralizing Knowledge