Abstract: A compound-based solar cell including a first electrode, a second electrode, a first type doped semiconductor layer and a second type doped semiconductor layer is provided. The first type doped semiconductor layer is disposed between the first electrode and the second electrode, and the second type doped semiconductor layer is disposed between the first type doped semiconductor layer and the second electrode. The first type doped semiconductor layer has a first side adjacent to the first electrode and a second side adjacent to the second type doped semiconductor layer. The first type doped semiconductor layer includes at least one of a plurality of elements, and the elements include potassium, rubidium and cesium. The concentration of at least one of the elements on the first side is higher than the concentration on the second side. Besides, a manufacturing method of a light absorption layer is also provided.

Abstract: The disclosure discloses a fabrication method for a light absorption layer of a solar cell, including: forming a precursor film on a substrate, wherein the precursor film includes the Group IB-IIB-IVA-VIA amorphous nanoparticles; and conducting a thermal process to the precursor film to form the light absorption layer on the substrate.

Abstract: A method for preparing an absorbing layer of a solar cell includes the following steps. An absorbing layer precursor containing at least one group XIV element is loaded on a substrate. A solid vapor source containing a group XIV element, the same as the group XIV element in the absorbing layer precursor is provided. The solid vapor source corresponds to the absorbing layer precursor. The solid vapor source and the absorbing layer precursor are kept apart by a distance. A heating process is performed so that the absorbing layer precursor forms an absorbing layer, the solid vapor source is vaporized and generates a gas containing the group XIV element, and the gas containing the group XIV element inhibits the effusion of the group XIV element of the absorbing layer precursor so that the proportion of the group XIV element in the formed absorbing layer is consistent.

Abstract: The disclosure discloses a fabrication method for a light absorption layer of a solar cell, including: forming a precursor film on a substrate, wherein the precursor film includes the Group IB-IIB-IVA-VIA amorphous nanoparticles; and conducting a thermal process to the precursor film to form the light absorption layer on the substrate.

Abstract: An embodiment of the invention provides a method for forming an indium (III) sulfide film, including providing a mixed solution containing a complexing agent, indium ions, and hydrogen sulfide ions; and contacting the mixed solution with a substrate to form an indium (III) sulfide film thereon, wherein the complexing agent has the following formula: wherein each of R1 and R2 respectively is hydrogen or hydroxyl.