18372263. Light-Emitting Element simplified abstract (SEMICONDUCTOR ENERGY LABORATORY CO., LTD.)

Light-Emitting Element

Organization Name

SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor(s)

Satoko Shitagaki of Isehara (JP)

Satoshi Seo of Sagamihara (JP)

Nobuharu Ohsawa of Zama (JP)

Hideko Inoue of Atsugi (JP)

Masahiro Takahashi of Atsugi (JP)

Kunihiko Suzuki of Atsugi (JP)

Light-Emitting Element - A simplified explanation of the abstract

This abstract first appeared for US patent application 18372263 titled 'Light-Emitting Element

Simplified Explanation

The light-emitting element described in the patent application is designed to have high external quantum efficiency by utilizing the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material. This allows for efficient energy transfer from the host material to the guest material, resulting in high energy transfer efficiency and ultimately a light-emitting element with high external quantum efficiency.

• The light-emitting element includes a light-emitting layer with a guest material and a host material.
• The emission spectrum of the host material overlaps with the absorption spectrum of the guest material.
• Phosphorescence is emitted by converting the excitation energy of the host material into the excitation energy of the guest material.
• Energy transfer from the host material to the guest material is smooth and efficient, leading to high external quantum efficiency.

Potential Applications

The technology can be applied in:

• OLED displays
• Lighting applications
• Organic photovoltaics

Problems Solved

The technology addresses the following issues:

• Low external quantum efficiency in light-emitting elements
• Short lifetime of light-emitting elements

Benefits

The benefits of this technology include:

• High external quantum efficiency
• Long lifetime of the light-emitting element
• Efficient energy transfer between materials

Potential Commercial Applications

The technology can be commercially applied in:

• Consumer electronics
• Lighting industry
• Renewable energy sector

Possible Prior Art

One possible prior art is the use of phosphorescent materials in OLED technology to improve efficiency and lifetime.

Unanswered Questions

How does the efficiency of this light-emitting element compare to traditional OLED technology?

The efficiency comparison with traditional OLED technology is not explicitly mentioned in the abstract. Further research or data may be needed to make a direct comparison.

Are there any specific industries that would benefit the most from this technology?

While potential applications are mentioned, a detailed analysis of which industries would benefit the most from this technology is not provided. Further market research may be required to determine specific industry preferences.

Original Abstract Submitted

Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.