This potential difference is called built-in potential. After joining p-type and n-type semiconductors, electrons from the n region near the pân interface tend to diffuse into the p region. As electrons diffuse, they leave positively charged ions (donors) in the n region.
Many people think that a baby rabbits is called a bunny, but this is actually just an affectionate nickname for rabbits, and not the correct English name for rabbit babies. So if baby rabbits are not called bunnies, then what are baby rabbits called? The correct term for a baby rabbit is kitten, often shortened to kit.
Baby hares, on the other hand, are called leverets. Unlike baby rabbits, baby hares are born with their eyes open, with fur on the body, and are able to move around freely on their own, enabling them to forage and fend for themselves shortly after being born. A lesser known fact is that in ancient times rabbits where in fact called coneys. An adult rabbit was known as a coney, and a baby coney (baby rabbit) was called a rabbit! So, if you want to know what baby rabbits are called, it depends what century you are looking at.