Effects of LiF/Al back electrode on the amorphous/crystalline silicon heterojunction solar cells

► We have employed a LiF dielectric layer as a new back-contact electrode. ► Increasing LiF thickness will decrease barrier for electrons transport, thus yield Jsc. ► Increasing LiF thickness will reduced shunt leakage and enhanced internal field, thus yield Voc. ► Employing LiF layer, improvement of performance of HIT solar cells up to 17.13%.