The influence of diamond-like carbon films on the properties of silicon solar cells

Allon-Alaluf, M.; Appelbaum, J.; Maharizi, M.; Сейдман, А.; Croitoru, N.

doi:10.1016/s0040-6090(97)00093-x

Cited by 21 publications

(10 citation statements)

References 5 publications

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“…Although much effort has devoted to improving the fabrication techniques of C/Si heterojunction PV cells ( Table 1 ) and adjusting the bandgap of a‐C, the application of a‐C/Si heterojunction PV cells have developed slowly due to the high density of defects, the difficulty of controlling the sp 2 /sp 3 ratio of the a‐C, the inhomogeneity of dopants, and the extreme growth process of a‐C …”

Section: Amorphous C/si Heterojunction Solar Cellsmentioning

confidence: 99%

Carbon/Silicon Heterojunction Solar Cells: State of the Art and Prospects

Zhu

2015

Advanced Materials

168

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In the last few decades, advances and breakthroughs of carbon materials have been witnessed in both scientific fundamentals and potential applications. The combination of carbon materials with traditional silicon semiconductors to fabricate solar cells has been a promising field of carbon science. The power conversion efficiency has reached 15-17% with an astonishing speed, and the diversity of systems stimulates interest in further research. Here, the historical development and state-of-the-art carbon/silicon heterojunction solar cells are covered. Firstly, the basic concept and mechanism of carbon/silicon solar cells are introduced with a specific focus on solar cells assembled with carbon nanotubes and graphene due to their unique structures and properties. Then, several key technologies with special electrical and optical designs are introduced to improve the cell performance, such as chemical doping, interface passivation, anti-reflection coatings, and textured surfaces. Finally, potential pathways and opportunities based on the carbon/silicon heterojunction are envisaged. The aspects discussed here may enable researchers to better understand the photovoltaic effect of carbon/silicon heterojunctions and to optimize the design of graphene-based photodevices for a wide range of applications.

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Section: Amorphous C/si Heterojunction Solar Cellsmentioning

confidence: 99%

Carbon/Silicon Heterojunction Solar Cells: State of the Art and Prospects

Zhu

2015

Advanced Materials

168

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“…The use of amorphous carbon as an antireflective coating has been reported in several papers. [1][2][3][4][5][6][7][8][9] Alaluf et al, 4 Choi et al, 5 and Pern et al 9 achieved an increase in the short-circuit current density in the 4-20% range. For similar structures (DLC films) reported in those references, we obtained a 22.6% increase, probably because the bandgap of our material (1.7 eV) is higher.…”

Section: A Drawbacks Of Amorphous Carbon As Antireflective Coatingsmentioning

confidence: 99%

“…An antireflective layer, for instance, may use a compound such as silane (SiH 4 ), or elements such as tin (Sn), indium (In), and other elements that need special care during solar cell manufacturing, or has limitations related to natural abundance or contamination of the environment. Due to these concerns, some researchers have investigated the use of antireflective coatings based on amorphous carbon, [1][2][3][4][5][6][7][8][9] an extremely abundant and environmentally sound element.…”

Section: Introductionmentioning

confidence: 99%

“…Amorphous carbon with a high concentration of sp 3 sites (60-95%) have been deposited by filtered cathodic vacuum arc (FCVA) and laser ablation. [21][22][23][24][25][26][27][28] These films have a relatively high bandgap (1.5-2.5 eV), are extremely hard (40-90 GPa), and extremely stressed (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). These films are known as tetrahedral amorphous carbon (ta-C).…”

Section: Introductionmentioning

confidence: 99%

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Application of amorphous carbon based materials as antireflective coatings on crystalline silicon solar cells

Silva

Côrtes

Oliveira

et al. 2011

Journal of Applied Physics

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We report on the investigation of the potential application of different forms of amorphous carbon (a-C and a-C:H) as an antireflective coating for crystalline silicon solar cells. Polymeric-like carbon (PLC) and hydrogenated diamond-like carbon films were deposited by plasma enhanced chemical vapor deposition. Tetrahedral amorphous carbon (ta-C) was deposited by the filtered cathodic vacuum arc technique. Those three different amorphous carbon structures were individually applied as single antireflective coatings on conventional (polished and texturized) p-n junction crystalline silicon solar cells. Due to their optical properties, good results were also obtained for double-layer antireflective coatings based on PLC or ta-C films combined with different materials. The results are compared with a conventional tin dioxide (SnO 2 ) single-layer antireflective coating and zinc sulfide=magnesium fluoride (ZnS=MgF 2 ) double-layer antireflective coatings. An increase of 23.7% in the short-circuit current density, J sc , was obtained using PLC as an antireflective coating and 31.7% was achieved using a double-layer of PLC with a layer of magnesium fluoride (MgF 2 ). An additional increase of 10.8% was obtained in texturized silicon, representing a total increase (texturization þ double-layer) of about 40% in the short-circuit current density. The potential use of these materials are critically addressed considering their refractive index, optical bandgap, absorption coefficient, hardness, chemical inertness, and mechanical stability.

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“…At present diamond-like carbon (DLC) films are rather widely used as very promising antireflection (AR) and protective coatings for silicon solar cells (SCs) [1][2][3]. The main advantages of DLC films are high hardness, chemical and radiation stability, and the possibility to change their optical properties under the variation of deposition conditions.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Solar Cells Efficiency and Radiation Stability by Deposition of Diamond-Like Carbon Films

Klyui

Lukyanov

Makarov

et al. 2011

Linköping Electronic Conference Proceedings

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Diamond-like carbon films (DLC) deposited by PE-CVD technique were used as antireflection and protective coatings for Si and A II B VI based solar cells (SC). Application of the DLC films as single-or doublelayer antireflection coatings allows us to improve the Si-based solar cells efficiency up to 1.4-1.5 times (from ~10% to ~15%). It has been shown that optical bandgaps of DLC films were increased after UV irradiation. The films with greater amount of nitrogen show better irradiation resistance. It was also established that Si (both mono-and multicrystalline) and A II B VI based SCs with even thin antireflection DLC film demonstrate higher stability against action of gamma-irradiation up to dose of 10 8 rad. The effect is connected with hydrogen atoms those are released from the film as a result of broken of carbon-hydrogen bonds by γor UV-quanta, diffuse to the SC, and passivate dangling bonds in the SC volume. It has been also shown that due to application of the DLC antireflection films with low refractive index the transparency of front ITO or ZnO (Al) contacts in A II B VI based SCs may be substantially improved integrally to 10% in spectral range of 430-850 nm. As a result, short circuit current and efficiency of thin film SCs may be also improved.

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The influence of diamond-like carbon films on the properties of silicon solar cells

Cited by 21 publications

References 5 publications

Carbon/Silicon Heterojunction Solar Cells: State of the Art and Prospects

Carbon/Silicon Heterojunction Solar Cells: State of the Art and Prospects

Application of amorphous carbon based materials as antireflective coatings on crystalline silicon solar cells

Improvement of Solar Cells Efficiency and Radiation Stability by Deposition of Diamond-Like Carbon Films

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