【摘要】 本文对以n-InP为基的再生式光电化学电池进行了多方面的探讨。研究了电极的掺杂浓度、晶面、溶液中的氧化还原对、酸碱度以及光强对电池性能的影响,还研究了电极的稳定性。研制的电池性能指标如下:n-InP[N_D=10¹⁶cm^-3,（100）面]在0.001MFe²⁺+0.5MFe³⁺+3MHCl溶液中,光强为65mW/cm²时,转换效率η=18％;n-InP[N_D=10¹⁸cm^-3,（100）面]在0.5MFe²⁺+0.4MFe³⁺+1.5MHCl溶液中,光强为50mW/cm²,η=6—8％,转换效率稳定性超过90小时;n-InP[N_D=10¹⁸cm^-3,（?）面]在2MS+1.5MNa₂S+1MNaOH溶液中,光强为50mW/cm²,短路150小时后,电极完全稳定,η=3.1％。更多还原

【Abstract】 In this paper,a detailed investigation of the n-InP based regenerative photoelectro-chemical cell is reported.Many factors,such as the donor concentration,the crystalline plane,the properties of the redox species,the pH value and the irradiation intensity all have influences on the energy conversion efficency.The stability of the electrode in the S2-/Sn2-,Fe2+/Fe3+ electrolytes is studied and explained in thermodynamic and kinetics aspects.The energy conversion efficency is 18% for n-InP in 0.001M Fe2+ +0.5M Fe3+ + 3M HC1 solution at 65mW/cm2 light intensity as its donor concentration is 1016 cm-3 and the crystalline plane is (100).The conversion efficency is 6-8% in 0.5M Fe2+ + 0.4M Fe3++1.5M HC1 at 50mW/cm2 light,intensity and its photocurrent remains constant in more than 90 hours.The electrode [ND=1018 cm-3,(111) plane] is stable in 2M S+1.5M Na2S+1M NaOH at 50mW/cm2 when the cell is short-circuited for 150 hours and the energy conversion efficency is 3.1%.更多还原