Shunde SYSU Institute for Solar Energy

Daliang, China

Shunde SYSU Institute for Solar Energy

Daliang, China
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Luo P.-F.,Sun Yat Sen University | Wang D.-L.,Sun Yat Sen University | Sui S.,Shunde SYSU Institute for Solar Energy | Shen H.,Sun Yat Sen University | Shen H.,Shunde SYSU Institute for Solar Energy
Rengong Jingti Xuebao/Journal of Synthetic Crystals | Year: 2016

2 μm pure Al electrodes were deposited on the rear surface of 30 mm×30 mm monocrystalline silicon PERC solar cells by thermal evaporation instruments, then processing the rear electrodes by industrial chained sintering furnace. The cells efficiency obtained the maximal value when the rear electrodes sintering had the properties of peak temperature 913.8℃ and Al-Si solution time 13 s. Four groups(100 μm rear Al paste/rear pure Al, 170 μm rear Al paste/rear pure Al) of 156 mm×156 mm monocrystalline silicon PERC solar cells were set in terms of the thicknesses of silicon wafers and the materials of rear electrodes, then this cells were sintered by optimized temperature fields respectively. The results show that 170 μm rear pure Al cells had the highest efficiency 16.42%, and the average efficiency is 0.37% higher than the same thickness rear Al paste cells, moreover, the bowing of 100 μm rear pure Al cells is negligible, it was considered that pure Al electrodes relative to Al paste electrodes were contribute to higher cell efficiency and lower bowing of thin cells consequently. © 2016, Chinese Ceramic Society. All right reserved.


Chen R.,Sun Yat Sen University | Sun Y.,Sun Yat Sen University | Sun Y.,ShunDe SYSU Institute for Solar Energy | Chen S.,ShunDe SYSU Institute for Solar Energy | And 3 more authors.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2016

The amorphous silicon and polycrystalline silicon PV power systems installed on the certain roof of Guangzhou College Town were used to study the difference of power generation performances of two systems. The output characteristics of two kinds of PV power system under different weather conditions were obtained according to their solar spectrum response characteristics and output power data, and the characteristic curve of solar spectrum under different weather conditions. In the case of sunny weather, polycrystalline silicon PV modules show the better output performance while the performance of amorphous silicon PV modules is better than that of polycrystalline silicon PV modules in cloudy weather. © 2016, Editorial Board of Acta Energiae Solaris Sinica. All right reserved.


Dong X.,Shunde SYSU Institute for Solar Energy | Shen H.,Shunde SYSU Institute for Solar Energy
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2016

The main causes and features of the efficiency degradation of PV modules were concluded through studying the silicon PV modules working outdoor at least 15 years. By studying the factors which leading to PV module failure and environment influence on PV raw materials, the power degradation was used as evaluation criteria and the test project was designed to predict the lifetime of PV modules. The evaluation processes were carried out in laboratory, and the results would provide a reference for studying the decay rate and lifetime of crystalline silicon PV modules. © 2016, Editorial Board of Acta Energiae Solaris Sinica. All right reserved.


Xu S.,Sun Yat Sen University | Liang Z.,Sun Yat Sen University | Shen H.,Sun Yat Sen University | Shen H.,ShunDe SYSU Institute for Solar Energy
Materials Letters | Year: 2014

An AZO/a-Si/c-Si heterojunction structure was prepared by PECVD and MBE systems. The electrical properties of the AZO/a-Si/c-Si heterojunction structure have been carried out by means of I-V and minority carrier lifetime measurements. The AZO/a-Si/c-Si heterojunction devices annealed in low temperatures lead to effects of the passivation of the surface and bulk of Si, while the annealing of AZO/a-Si/c-Si heterojunction devices in higher temperatures will cause a larger dark current and lower minority carrier lifetime. © 2014 Elsevier B.V.


Jiang C.-M.,Sun Yat Sen University | Yin Q.-L.,Sun Yat Sen University | Yin Q.-L.,Shunde SYSU Institute for Solar Energy | Shen H.,Sun Yat Sen University | Shen H.,Shunde SYSU Institute for Solar Energy
Rengong Jingti Xuebao/Journal of Synthetic Crystals | Year: 2015

Ag-Si contacts formed on planar emitter and textured emitter by screen-printing and firing were investigated. Contact resistivity was measured by transfer length method (TLM). Ag-Si contact resistivity of planar emitter and textured emitter were measured to be 4.4 mΩ·cm2 and 1.1 mΩ·cm2, respectively. It shows that contact resistivity of planar emitter is much higher than that of textured emitter. Greater relative surface area of pyramids than that of plane is one obvious reason. To understand this phenomenon deeply, the profile of a textured emitter was observed by SEM and a deeper junction was found in the peak region of the pyramid. In particular, the junction depth decreases gradually from the peak to the valley along the (111) crystal plane of the pyramid. Moreover, the interface between silver electrode and silicon surface was observed through SEM and the current transport mechanism was discussed. Afterwards, the silver electrode bulk was peeled off then the distribution of silver crystallite precipitates on planar surface and textured surface were studied via SEM and EDS. The results show that silver crystallite precipitates spread greatly unevenly on planar surface. On the contrary, silver crystallite precipitates on textured surface distribute uniformly and densely. Besides, more silver crystallite precipitates were found embedded in the pyramidal peak which has a higher dopant concentration. This characteristic distribution leads to different contact resistivity. ©, 2015, Chinese Ceramic Society. All right reserved.


Sun Y.,ShunDe SYSU Institute for Solar Energy | Sun Y.,Sun Yat Sen University | Chen S.,ShunDe SYSU Institute for Solar Energy | Shen H.,ShunDe SYSU Institute for Solar Energy | Shen H.,Sun Yat Sen University
2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 | Year: 2015

Base on finite-element-method(FEM), temperature of PV roof was simulated and analyzed with various radiation and air velocity. The results showed that roof with PV modules got lower temperature of 1∼5°C with a 20% difference compared to roof without modules. Beside generating power, PV modules can insulate building roof from heat with important value in engineer application. © 2015 IEEE.


Li M.,Sun Yat Sen University | Zeng L.,Sun Yat Sen University | Chen Y.,Sun Yat Sen University | Chen Y.,TRINA SOLAR LTD | And 3 more authors.
International Journal of Photoenergy | Year: 2013

We presented a method to use SiOSiNH double layer antireflection coatings (DARC) on acid textures to fabricate colored multicrystalline silicon (mc-Si) solar cells. Firstly, we modeled the perceived colors and short-circuit current density (Jsc) as a function of SiNH thickness for single layer SiNH, and as a function of SiOthickness for the case of SiOSiNH (DARC) with fixed SiNH (refractive index n=2.1 at 633 nm, and thickness = 80 nm). The simulation results show that it is possible to achieve various colors by adjusting the thickness of SiOto avoid significant optical losses. Therefore, we carried out the experiments by using electron beam (e-beam) evaporation to deposit a layer of SiOover the standard SiNH for 156×156 mm2 mc-Si solar cells which were fabricated by a conventional process. Semisphere reflectivity over 300 nm to 1100 nm and I-V measurements were performed for grey yellow, purple, deep blue, and green cells. The efficiency of colored SiOSiNH DARC cells is comparable to that of standard SiNH light blue cells, which shows the potential of colored cells in industrial applications. © 2013 Minghua Li et al.

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