A5028581396- Silicon and Solar Cell Technologies
- Semiconductor materials and interfaces
- Thin-Film Transistor Technologies
- Nanowire Synthesis and Applications
- Advancements in Semiconductor Devices and Circuit Design
- solar cell performance optimization
- Optical Coatings and Gratings
- Silicon Nanostructures and Photoluminescence
- Thermal Radiation and Cooling Technologies
- Solar Thermal and Photovoltaic Systems
Sun Yat-sen University
2019-2024
Solar Energy Research Institute of Sun Yat-sen University
2024
Lanzhou University
2022-2023
Chinese Academy of Sciences
2017-2018
Ningbo Institute of Industrial Technology
2017-2018
Shanghai University
2017
Combining electron- and hole-selective materials in one crystalline silicon (Si) solar cell, thereby avoiding any dopants, is not considered for application to photovoltaic industry until only comparable efficiency stable performance are achievable. Here, it demonstrated how a conventionally unstable electron-selective contact (ESC) optimized with huge boost stability as well improved electron transport. With the introduction of Ti thin film between a-Si:H(i)/LiF Al electrode, high-level...
Abstract Crystalline silicon solar cells with regular rigidity characteristics dominate the photovoltaic market, while lightweight and flexible thin crystalline significant market potential have not yet been widely developed. This is mainly caused by brittleness of wafers lack a solution that can well address high breakage rate during fabrication. Here, we present reinforced ring (TSRR) structure, which successfully used to prepare free-standing 4.7-μm 4-inch wafers. Experiments simulations...
Abstract Silicon (Si)‐based dopant‐free heterojunction solar cells (SCs) featuring carrier‐selective contacts (CSCs) have attracted considerable interest due to the extreme simplifications in their device structure and manufacturing procedure. However, these SCs are limited by unsatisfactory contact properties on both sides of junction, efficiencies not comparable with those commercially available Si SCs. In this report, a high‐performance silicon‐oxide/magnesium (SiO x /Mg)...
Dopant‐free heterojunction (HJ) solar cells are known for their simple process conditions and low parasitic absorption. However, stability issues remain one of the major obstacles further development with transition metal oxides (TMOs). Therefore, this research demonstrates mechanism thermal annealing degradation effects on TMOs/silicon (Si) HJ, namely, infiltration oxygen from air bidirectional diffusion TMOs, by investigating a typical molybdenum oxide (MoO x )/Si contact. A dense Au...
Abstract Surface nanotexturing with excellent light‐trapping property is expected to significantly increase the conversion efficiency of solar cells. However, limited by serious surface recombination arising from greatly enlarged area, silicon (Si) nanotexturing‐based cells cannot yet achieve satisfactory high efficiency, which more prominent in organic/Si hybrid (HSCs) where a uniform polymer layer can rarely be conformably coated on nanotextured substrate. Here, HSCs featuring advanced...
Research on photovoltaic devices with a high performance-to-cost ratio requires efforts not only efficiency improvement but also manufacturing cost reduction. Recently, record of 26.6% crystalline silicon solar cells (SCs) has been achieved by combining the heterojunctions (HJs) device structure interdigitated back contacts. However, technology that integrates interdigital p- and n-type amorphous (a-Si:H) layers rear surface Si substrate is challenging. This issue motivated researchers to...
Abstract Recently, silicon single nanowire solar cells (SNSCs) serving as the sustainable self-power sources have been integrated into optoelectronic nanodevices under driver of technology and economy. However, conventional SNSC cannot provide minimum energy consumption for operation due to its low power conversion efficiency (PCE). Here, we propose an innovative approach combine n -type nanowires (SiNWs) with p poly(3,4-ethylthiophene):poly(styrenesulfonate) (PEDOT:PSS) form +...
Surface-texture with silicon (Si) nanopyramid arrays has been considered as a promising choice for extremely high performance solar cells due to their excellent anti-reflective effects and inherent low parasitic surface areas. However, the current techniques of fabricating Si are always complicated cost-ineffective. Here, throughput nanosphere patterning method is developed form periodic upright (UNP) in wafer-scale. A direct comparison state-of-the-art texture random pyramids demonstrated...
The organic/silicon (Si) hybrid heterojunction solar cells (HHSCs) have attracted considerable attention due to their potential advantages in high efficiency and low cost. However, as a newly arisen photovoltaic device, its current is still much worse than commercially available Si cells. Therefore, comprehensive systematical optoelectronic evaluation loss analysis on this HHSC therefore highly necessary fully explore potential. Here, thoroughly simulation provided typical planar polymer...
Carrier recombination and light management of the dopant-free silicon/organic heterojunction solar cells (HSCs) based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) are critical factors in developing high-efficiency photovoltaic devices. However, traditional passivation technologies can hardly provide efficient surface front Si. In this study, a photoinduced electric field was induced bilayer antireflective coating (ARC) polydimethylsiloxane (PDMS) titanium oxide...
A large-scale nanostructured low-temperature solar selective absorber is demonstrated experimentally. It consists of a silicon dioxide thin film coating on rough refractory tantalum substrate, fabricated based simply self-assembled, closely packed polystyrene nanospheres. Because the strong light harvesting surface nanopatterns and constructive interference within top coating, our has much higher absorption (0.84) than its planar counterpart (0.78). Though lower that commercial black paint...
Specific contact resistance ( ρ C ) plays a significant role in determining the efficiency of dopant‐free heterojunction (DFHJ) silicon solar cells. Existing methods allow accurate measurement only majority carrier collection region. Herein, taking heterojunctions transition metal oxide/c‐Si(n) as an example, how to extract from minority (hole) region by ingeniously using expanded Cox and Strack method is demonstrated. On basis technology computer‐aided design double (diode + resistance)...
Crystalline silicon solar cells produced by doping processes have intrinsic shortages of high Auger recombination and/or severe parasitic optical absorption. Dopant-free carrier-selective contacts (DF-CSCs) are alternative routines for the next generation highly efficient cells. However, it is difficult to achieve both good passivating and low contact resistivity most DF-CSCs. In this paper, a high-quality dopant-free electron-selective made from ultra-low concentration water solution...
Dopant-free passivating contacts have the potential to be deposited at low costs while exhibiting excellent electrical performance for photovoltaic devices. However, one significant issue of such a technology is unsatisfactory environmental stability compared conventional doped-silicon contacts. Herein, we present strategy improving and properties typical electron-selective (ESCs) with i-a-Si:H/LiF/Al stack by inserting thermally evaporated thin metal films as protective layers....
Crystalline silicon solar cells dominate the photovoltaic market nowadays. However, they are rarely used in self‐powered systems (with an operating voltage of 1.5∼12.0 V) mainly because low integration cell modules, which need slicing and then series connection. Herein, a series‐interconnected can be prepared on monolithic wafer, with capability to output high by controlling number sub‐cells, is proposed. Further, based technology computer aided design (TCAD) numerical simulation, in‐depth...