Abstract: Chloroplast (chlp)solutions were prepared from fresh sphach leaves in the media: dis-tilled water(Ⅰ),0.1mol/l KCl(Ⅱ),0.35mol/l NaCl+0.01mol/l Tris (Ⅲ),0.005mol/lMgCl₂+0.005mol/l EDTA(Ⅳ)and Ⅲ+Ⅳ(Ⅴ).The photovoltaic effect of chlp solutionon SnO₂ optically transparent conductive glass eletrode(OTE) was measured,using Pt,C and SCE as counter electrodes,respectively. The working curves of chlp cells were drawn with an x-y recorder,and from those we got various characteristic parameters of the cells.The power conversion efficiency was above l0^-4%,The absorption spectra of chlp solutions were analyzed and the possible mechanism of photovoltaic effect of chlp and charge transfer was discussed.

Key words: SnO₂, chloroplast, photovoltaic effect, photoelectric cell