Theknoloji ea PERC: Theknoloji ea PERC ke thekenoloji e ntlafatsang bokhoni ba lisele ka ho eketsa lera la filimi ea boleng bo phahameng e sireletsang ka morao ho lisele tsa letsatsi tsa monocrystalline silicon.Filimi e fokotsa litefiso, e fokotsa ho kopana hape ha litefello, 'me e fokotsa tahlehelo ea ponts'o e ka morao ea betri, ka ho etsa joalo e ntlafatse bokhoni ba betri ea ho fetola photoelectric.