positive/negative junction
/ˈpɒzɪtˌɪv ˈslaʃ ˈnɛɡətˌɪv ˈdʒʌŋkʃən/
n
中文：正负结
Meaning：Contact area in which electrons are exchanged between two layers to create an electric current; radiation moves the charges between these regions to create voltage.