Showing papers by "Jun Hong Noh published in 2020"

Recent Progress in Metal Halide Perovskite-Based Tandem Solar Cells

Abstract: Metal halide perovskite (MHP)-based tandem solar cells are a promising candidate for use in cost-effective and high-performance solar cells that can compete with fossil fuels. To understand the research trends for MHP-based tandem solar cells, a general introduction to single-junction and multiple-junction MHP solar cells and the configuration of tandem devices is provided, along with an overview of the recent progress regarding various MHP-based tandem cells, including MHP/crystalline silicon, MHP/CuInGaS, MHP/organic photovoltaic, MHP/quantum dot, and all-perovskite tandem cell. Future research directions for MHP-based tandem solar cells are also discussed.

Photon recycling in halide perovskite solar cells for higher efficiencies

Abstract: The efficiency of halide perovskite solar cells has progressed rapidly through a series of major breakthroughs. Currently, a certified efficiency of 25.2% has been achieved for a solar cell using a polycrystalline thin film. This is the result of having reached 75% of the Shockley–Queisser limit for single-junction solar cells. However, for further improvements, new breakthrough technologies are required. This article reviews the impact of previous breakthrough technologies on the efficiency of halide perovskite solar cells, based on certified efficiencies. We clarify the current status of halide perovskite solar cells and introduce photon recycling as the next technological innovation for higher efficiencies. Photon recycling keeps the photon concentration inside the light-harvesting layer high, and consequently, leads to open-circuit voltages close to the theoretical value. Although photon recycling has not yet been implemented in real halide perovskite solar cells, three key technologies for implementing it are examined.

Highly Efficient Large-Area Organic Photovoltaic Module with a 350 nm Thick Active Layer Using a Random Terpolymer Donor

Abstract: Random terpolymers are developed by incorporating small portions of benzodithiophene into a highly crystalline copolymer of terthiophene and difluorobenzothiadiazole, BDT-Th0. The bulk-heterojuncti...

Rapid processed perovskite halide crystalline thin film and preparing thereof

Abstract: The present invention relates to a halide perovskite thin film allowing high-speed crystallization and a method for preparing the same. According to the present invention, a crystallization accelerator is added to halide perovskite satisfying Chemical Formula 1 during perovskite thin film formation. As a result, crystallization can be expedited. The crystallization accelerator is a substance satisfying Chemical Formula 2. in the chemical formula 1: A^1M^1X^1_3, A^1 is a monovalent cation, M^1 is a divalent metal ion, and X^1 is a halogen element of Br and I. In the chemical formula 2: A^2M^2X^2_3, A^2 is a monovalent cation, M^2 is a divalent metal ion, and X^2 is a halogen element of F and Cl.

Manufacturing method of a multi-layered perovskite structure and a multi-layered perovskite structure and solar cell manuractured by the same

Abstract: The present disclosure discloses a method of manufacturing a multilayer perovskite structure, and a multilayer perovskite structure and solar cell manufactured using the same. The method of manufacturing a multilayer perovskite structure according to an embodiment of the present disclosure includes a step of forming a first perovskite layer using a compound including a first perovskite precursor on a base substrate; a step of forming a second perovskite layer using a compound including a second perovskite precursor on a donor substrate; and a step of laminating the first and second perovskite layers so that the first and second perovskite layers contact each other and then applying heat or pressure to form a multilayer perovskite structure.