Hydrogenated microcrystalline silicon germanium: A bottom cell material for amorphous silicon‐based tandem solar cells

1996 ◽  
Vol 69 (27) ◽  
pp. 4224-4226 ◽  
Author(s):  
G. Ganguly ◽  
T. Ikeda ◽  
T. Nishimiya ◽  
K. Saitoh ◽  
M. Kondo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Amorphous Silicon ◽  
Silicon Germanium ◽  
Microcrystalline Silicon ◽  
Tandem Solar Cells ◽  
Bottom Cell ◽  
Cell Material ◽  
Silicon Based

scholarly journals Material and solar cell research in high efficiency micromorph tandem solar cell

2015 ◽  
Vol 37 ◽  
pp. 434 ◽  
Author(s):  
Razagh Hafezi ◽  
Soroush Karimi ◽  
Sharie Jamalzae ◽  
Masoud Jabbari
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
High Efficiency ◽  
Crystalline Silicon ◽  
Chemical Vapour ◽  
Microcrystalline Silicon ◽  
Tandem Solar Cells ◽  
Bottom Cell

“Micromorph” tandem solar cells consisting of a microcrystalline silicon bottom cell and an amorphous silicon top cell are considered as one of the most promising new thin-film silicon solar-cell concepts. Their promise lies in the hope of simultaneously achieving high conversion efficiencies at relatively low manufacturing costs. The concept was introduced by IMT Neuchâtel, based on the VHF-GD (very high frequency glow discharge) deposition method. The key element of the micromorph cell is the hydrogenated microcrystalline silicon bottom cell that opens new perspectives for low-temperature thin-film crystalline silicon technology. This paper describes the use, within p–i–n- and n–i–p-type solar cells, of hydrogenated amorphous silicon (a-Si:H) and hydrogenated microcrystalline silicon (_c-Si:H) thin films (layers), both deposited at low temperatures (200_C) by plasma-assisted chemical vapour deposition (PECVD), from a mixture of silane and hydrogen. Optical and electrical properties of the i-layers are described. Finally, present performances and future perspectives for a high efficiency ‘micromorph’ (mc-Si:Hya-Si:H) tandem solar cells are discussed.

Optimization of Silicon-Based 2-Terminal Tandem Solar Cells with GaAs1-xPxand InGa1-xPxas Top Cell Material

1996 ◽  
Vol 35 (Part 1, No. 8) ◽  
pp. 4389-4394 ◽  
Author(s):  
Yuji Komatsu ◽  
Takashi Fuyuki ◽  
Hiroyuki Matsunami
Keyword(s):  
Solar Cells ◽  
Tandem Solar Cells ◽  
Cell Material ◽  
Silicon Based

Hydrogenated amorphous silicon–germanium thin films with a narrow band gap for silicon-based solar cells

2011 ◽  
Vol 11 (1) ◽  
pp. S50-S53 ◽  
Author(s):  
Chao-Chun Wang ◽  
Chueh-Yang Liu ◽  
Shui-Yang Lien ◽  
Ko-Wei Weng ◽  
Jung-Jie Huang ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Band Gap ◽  
Silicon Germanium ◽  
Narrow Band ◽  
Hydrogenated Amorphous Silicon ◽  
Silicon Based ◽  
Amorphous Silicon Germanium ◽  
Hydrogenated Amorphous

Amorphous silicon–germanium for triple and quadruple junction thin-film silicon based solar cells

2015 ◽  
Vol 133 ◽  
pp. 163-169 ◽  
Author(s):  
Jan-Willem Schüttauf ◽  
Bjoern Niesen ◽  
Linus Löfgren ◽  
Maximilien Bonnet-Eymard ◽  
Michael Stuckelberger ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Silicon Germanium ◽  
Thin Film Silicon ◽  
Silicon Based ◽  
Amorphous Silicon Germanium

scholarly journals Amorphous Silicon Thin Film Deposition for Poly-Si/SiO2 Contact Cells to Minimize Parasitic Absorption in the Near-Infrared Region

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8199
Author(s):  
Changhyun Lee ◽  
Jiyeon Hyun ◽  
Jiyeon Nam ◽  
Seok-Hyun Jeong ◽  
Hoyoung Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Near Infrared ◽  
Infrared Region ◽  
Film Deposition ◽  
Solar Cell Performance ◽  
Tandem Solar Cells ◽  
Bottom Cell ◽  
Near Infrared Region

Tunnel oxide passivated contact (TOPCon) solar cells are key emerging devices in the commercial silicon-solar-cell sector. It is essential to have a suitable bottom cell in perovskite/silicon tandem solar cells for commercial use, given that good candidates boost efficiency through increased voltage. This is due to low recombination loss through the use of polysilicon and tunneling oxides. Here, a thin amorphous silicon layer is proposed to reduce parasitic absorption in the near-infrared region (NIR) in TOPCon solar cells, when used as the bottom cell of a tandem solar-cell system. Lifetime measurements and optical microscopy (OM) revealed that modifying both the timing and temperature of the annealing step to crystalize amorphous silicon to polysilicon can improve solar cell performance. For tandem cell applications, absorption in the NIR was compared using a semitransparent perovskite cell as a filter. Taken together, we confirmed the positive results of thin poly-Si, and expect that this will improve the application of perovskite/silicon tandem solar cells.

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