Yingzhuang Ma
Peking University
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Publication
Featured researches published by Yingzhuang Ma.
RSC Advances | 2015
Zelin Lu; Xujie Pan; Yingzhuang Ma; Yu Li; Danfei Zhang; Qi Xu; Zhijian Chen; Shufeng Wang; Bo Qu; Fang Liu; Yidong Huang; Lixin Xiao; Qihuang Gong
This article demonstrates a significant broadband enhancement of light absorption and improvement of photon-generated-charge transfer in CH3NH3PbI3 perovskite solar cells by incorporating plasmonic Au–Ag alloy popcorn-shaped nanoparticles (NPs). Compared to conventional nanoparticles and nanorods, these popcorn-shaped NPs have many fine structures. The devices maximum power conversion efficiency (PCE) increases from 8.9% to 10.3%, namely 15.7% enhancement, with the aid of plasmonic popcorn-shaped NPs.
AIP Advances | 2015
Shengbo Ma; Hungkit Ting; Yingzhuang Ma; Miwei Zhang; Lixin Xiao; Zhijian Chen
In this paper, smart photovoltaic (SPV) devices, integrating both functions of solar cells and smart windows, was fabricated based on dye-sensitized solar cells using photochromic spiropyran derivatives SIBT as photosensitizers. SPV devices have self-regulated power conversion efficiency (PCE) and light transmission responding to the incident spectra due to the photoisomerization of SIBT. SIBT isomerize from closed-ring form to open-ring form under UV illumination, accompanied with enhanced visible light absorption and electron delocalization. Therefore, increased PCE and absorption in SPV devices were observed under UV treatment and the devices can be restored gradually to the initial status when kept in dark. The SPV devices have self-regulation of PCE and sunlight transmission responding to the changing sun spectra in different times of a day, providing a proper energy usage and a better sun-shading.
ACS Applied Materials & Interfaces | 2017
Yingzhuang Ma; Lixin Xiao; Fengyan Zhang; Yuanhao Wang; Hongxing Yang
Interfacial materials play a critical role in photoelectric conversion properties as well as the anomalous hysteresis phenomenon of the perovskite solar cells (PSCs). In this article, a water-soluble polythiophene PTEBS was employed as a cathode interfacial material for PSCs. Efficient energy level aligning and improved film morphology were obtained due to an ultrathin coating of PTEBS. Better ohmic contact between the perovskite layer and the cathode also benefits the charge transport and extraction of the device. Moreover, less charge accumulation at the interface weakens the polarization of the perovskite resulting in a relatively quick response of the modified device. The ITO/PTEBS/CH3NH3PbI3/spiro-MeOTAD/Au cells by an all low-temperature process achieved power conversion efficiencies of up to 15.4% without apparent hysteresis effect. Consequently, the utilization of this water-soluble polythiophene is a practical approach for the fabrication of highly efficient, large-area, and low-cost PSCs and compatible with low-temperature solution process, roll-to-roll manufacture, and flexible application.
Acta Chimica Sinica | 2015
Yingzhuang Ma; Lipei Zhang; Zhijian Chen; Shufeng Wang; Bo Qu; Lixin Xiao; Qihuang Gong
Over the last 20 years, much attention has been paid to renewable energy technology. Photovoltaic is a promising alternative to conventional fossil fuels. Dye-sensitized solar cells (DSCs) attract notable interest, not only due to their high efficiency and environmentally friendly nature, but also their easy fabrication and relatively low manufacture costs. Despite the high efficiencies, iodine/triiodine electrolytes have some disadvantages, such as the corrosion of the metallic electrodes and the sealing materials. It also absorbs visible light around 430 nm. Therefore, it is important to exploit the iodine-free re- dox couple in DSCs. An organic disulfide material of 2,5-dimercapto-1,3,4-thiadiazole (DMcT) is proved here to reduce and oxidize independently via homopolymerization and depolymerization. DMcT has been applied as cathode active material for lithium rechargeable batteries. Meanwhile, the self-redox property could be used as redox mediator in lieu of iodine/triiodine electrolytes. DMcT can be oxidized by self-polymerizing into PDMcT, which can be reduced by depolymerizing back to DMcT. In contrast to the conventional redox couples consisted of two different materials, DMcT can independently act as the redox mediator, which is the main difference between DMcT and the redox couples reported previously. Dye-sensitized solar cells consist of mesoporous TiO2, N719 dye, and this novel electrolyte achieved power conversion efficiency of 1.6% under 100 mWcm -2 simulated sunlight (AM 1.5G) and a higher efficiency of 2.6% at weak illumination (13 mWcm -2 ), implying
Chemical Communications | 2014
Yao-Hsien Chung; Yingzhuang Ma; Lipei Zhang; Lixin Xiao; Zhijian Chen; Shufeng Wang; Bo Qu; Qihuang Gong
Nanoscale | 2014
Yingzhuang Ma; Saisai Chu; Shufeng Wang; Bo Qu; Lixin Xiao; Zhijian Chen; Qihuang Gong; Zhaoxin Wu; Xun Hou
Dalton Transactions | 2015
Danfei Zhang; Yingzhuang Ma; Zelin Lu; Zhijian Chen; Shufeng Wang; Lixin Xiao; Qihuang Gong
Chemical Communications | 2014
Yingzhuang Ma; Yao-Hsien Chung; Saisai Chu; Lixin Xiao; Zhijian Chen; Shufeng Wang; Bo Qu; Qihuang Gong; Zhaoxin Wu; Xun Hou
ACS Applied Materials & Interfaces | 2015
Yingzhuang Ma; Yao-Hsien Chung; Danfei Zhang; Xiao Yu; Lixin Xiao; Zhijian Chen; Shufeng Wang; Bo Qu; Qihuang Gong; Dechun Zou
Chinese Journal of Chemistry | 2014
Yingzhuang Ma; Shufeng Wang; Zelin Lu; Danfei Zhang; Zuqiang Bian; Chunhui Huang; Lixin Xiao