Passivation ability of graphene oxide demonstrated by two-different-metal solar cells

Abstract

The study on graphene oxide (GO) grows rapidly in recent years. We find that graphene oxide could act as the passivation material in photovoltaic applications. Graphene oxide has been applied on Si two-different-metal solar cells. The suitable introduction of graphene oxide could result in obvious enhancement on the efficiency. The simple chemical process to deposit graphene oxide makes low thermal budget, large-area deposition, and fast production of surface passivation possible. The different procedures to incorporate graphene oxide in Si two-different-metal solar cells are compared, and 21% enhancement on the efficiency is possible with a suitable deposition method.

Noncovalent Functionalization of Graphene and Graphene Oxide for Energy Materials, Biosensing, Catalytic, and Biomedical Applications

“…Solar energy is considered a possible alternative to the traditional fossil fuel energy sources due to the fact that the sun is essentially a free and continuous energy supply. Additionally, the cost of solar cells can be dramatically reduced when the efficiency of solar cells is increased; for example, a solar module that exhibited a 1% enhancement in its efficiency led to a 5% reduction in price . G/GO exhibits potential as an optically conductive window as they allow a wide range of light wavelengths to pass through, that is, optical transmittance reaching ∼98%. , Additionally, G/GO optical and electrical properties can be modulated through noncovalent interactions with metal complexes, which make it suitable for different types of solar cell applications. − Wang et al’s group have developed a solution-based low-temperature deposition procedure to manufacture the electron collection layer using a G/TiO 2 nanoparticle material as the electron collection layers in meso-superstructured perovskite solar cells.…”

“…Additionally, the cost of solar cells can be dramatically reduced when the efficiency of solar cells is increased; for example, a solar module that exhibited a 1% enhancement in its efficiency led to a 5% reduction in price . G/GO exhibits potential as an optically conductive window as they allow a wide range of light wavelengths to pass through, that is, optical transmittance reaching ∼98%. , Additionally, G/GO optical and electrical properties can be modulated through noncovalent interactions with metal complexes, which make it suitable for different types of solar cell applications. − Wang et al’s group have developed a solution-based low-temperature deposition procedure to manufacture the electron collection layer using a G/TiO 2 nanoparticle material as the electron collection layers in meso-superstructured perovskite solar cells. They found that the solar cells manufactured using this low-temperature process exhibit a significant photovoltaic performance, that is, power conversion efficiency up to 15.6%, which suggests that solar cells no longer need a high-temperature sintering process when TiO 2 is employed in the electron collection layer (see Figure ).…”

“…The GO-based OPDs showed a power-conversion efficiency of 1.1% with 70% transparency . Many reports on the good optical transmittance and excellent electrical conductivity of G layers have been published, − but studies are limited on the transparent conducting property by coating the G layers onto fabricated solar cells. Additionally, difficulties arise in the transfer of a uniform G/GO layer onto highly textured surfaces, and this may limit its possible large-scale production.…”

“…Additionally, the cost of solar cells can be dramatically reduced when the efficiency of solar cells is increased; for example, a solar module that exhibited a 1% enhancement in its efficiency led to a 5% reduction in price. 346 G/GO exhibits potential as an optically conductive window as they allow a wide range of light wavelengths to pass through, that is, optical transmittance reaching ∼98%. 346,347 Additionally, G/GO optical and electrical properties can be modulated through noncovalent interactions with metal complexes, which make it suitable for different types of solar cell applications.…”

“…346 G/GO exhibits potential as an optically conductive window as they allow a wide range of light wavelengths to pass through, that is, optical transmittance reaching ∼98%. 346,347 Additionally, G/GO optical and electrical properties can be modulated through noncovalent interactions with metal complexes, which make it suitable for different types of solar cell applications. 346−350 Wang et al's 351 group have developed a solution-based low-temperature deposition procedure to manufacture the electron collection layer using a G/TiO 2 nanoparticle material as the electron collection layers in mesosuperstructured perovskite solar cells.…”