Diamond-like carbon protective anti-reflection coating for Si solar cell

Photoluminescence enhancement induced by nanoparticles from La2O3 and CeO2 doped diamond-like carbon films

“…Diamond-like carbon (DLC) films have been widely used in the fields of optics, electricity, solid state devices, etc., due to their unique properties, such as high hardness, high electrical resistivity, low infrared absorption, transparency to visible light and chemical inertness [1,2]. With the lacking of energy sources in recent years, the research on DLC films as anti-reflection coatings has attracted more and more attention, attributing to that DLC films have wide bandgaps, and adjustable refractive indices [3,4].…”

“…With the lacking of energy sources in recent years, the research on DLC films as anti-reflection coatings has attracted more and more attention, attributing to that DLC films have wide bandgaps, and adjustable refractive indices [3,4]. The DLC coated Si solar cells increase the solar cell efficiency by 20% [1], and the transmission efficiency in the infrared and visible regions is 68.83 and 85%, respectively, close to theoretical value for nonabsorption carbon material [5,6]. For the development of solar cells, the pure DLC anti-reflection coatings can not meet the requirements of photoconversion, such as low photoconversion efficiency, photoluminescence (PL), etc., of pure DLC films, thus doping elements into DLC films is attempted to improve the optical properties of DLC films [7].…”

Applications of carbon materials in photovoltaic solar cells

“…For example, a-C/Si heterojunctions have been realized through an n-type doping using phosphorus and nitrogen [18][19][20] and p-type doping using boron [21]. On the other hand, a-C films can be used as a protective antireflecting coating for regular silicon solar cells to enhance the cell efficiency [22].…”

The effect of the native silicon dioxide interfacial layer on photovoltaic characteristics of gold/p-type amorphous boron carbon thin film alloy/silicon dioxide/n-type silicon/aluminum solar cells

“…They can be prepared with various characteristics by changing the sp 2 /sp 3 ratio [3]. Recently, a-C films have been used not only as protective layers or anti-reflective layers [4][5][6], but also in n-type carbon/p-type silicon [7][8][9] or p-type carbon/n-type silicon [8,[10][11][12][13] heterojunctions for solar cells. p-Type amorphous carbon (p-C) films are generally prepared by doping boron [8,10,11,[14][15][16] or metal elements [2,17,18] in a-C films using chemical vapor deposition (CVD) [9][10][11]15,16] or physical vapor deposition (PVD) [2,7,8].…”