Solar cell, method of forming emitter layer of solar cell, and method of manufacturing solar cell

A solar cell, comprising:

• a substrate of a first conductive type;
• an emitter layer that is positioned on the substrate and is a second conductive type that is opposite to the first conductive type;
• first electrodes that are connected to the emitter layer;
• and
• a second electrode that is connected to the substrate,
• wherein the emitter layer comprises a plurality of first emitter portions and a plurality of second emitter portions,
• the first electrodes comprise a plurality of finger electrodes, and a plurality of bus electrodes intersecting and connected to the plurality of finger electrodes, and
• the plurality of bus electrodes are formed over alternate ones of the plurality of first emitter portions and the plurality of second emitter portions.