4 天之前 · Power conversion efficiency (PCE) of the perovskite solar cell is getting >15%, better than those of OPV and DSSC. 2,3) A device of the perovskite solar cell is solution-processible enabling fabrication at low cost. The organic-inorganic perovskites RNH 3 PbX 3 are easily prepared from HX salts of organic amines and lead halides.