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本文对多晶CdS薄膜—电介液太阳电池作了初步探索,其中的对阴极是用化学喷涂法在玻璃板上沉积成的SnO_2薄膜,CdS薄膜有两种,一是在上述涂有SnO_2的玻璃上用化学喷涂法沉积成的CdS薄膜(即喷涂膜),另一种是以导电陶瓷((SnO_2—ZnO))为衬底的烧结CdS薄膜(即烧结膜)。电解液为目前常用的NaOH—S—Na_2S混合液。通过实验与测量得到以下几点结果: 1.发现有一个最佳电介液浓度约为0.33M,在这个浓度下,电池得到最大的短路电流和开路电压。 2.在自然阳光下,喷涂和烧结薄膜—电介液(0.33M)电池的Jsc分别达160μA/cm~2和420μA/cm~2,比Chartier的同类喷涂CdS薄膜——电介液(1M)电池在100mw/cm~2的Hg灯光下测得的Jsc=32μA/cm~2大5—14倍,相应的喷涂和烧结电池的Voc分别为0.34伏和0.50伏,前者与Chartier的Voc=0.36伏相当,后者却高出1/3。 3.阳光下测得的Ⅰ—Ⅴ曲线的特性较劣,填充因子FF在0.25以下,表明这种电池内存在很大的串联电阻。这种情况同样存在于Chartier的实验结果中。
In this paper, the polycrystalline CdS thin film - dielectric liquid solar cells made a preliminary exploration, in which the cathode is deposited by chemical spraying on the glass plate into SnO_2 film, CdS film has two kinds, one in the above coated SnO_2 The CdS film (ie, sprayed film) deposited on the glass by chemical spraying method and the sintered CdS film (ie, sintered film) on the conductive ceramic (SnO 2 -ZnO) substrate. Electrolyte for the current commonly used NaOH-S-Na_2S mixture. The following results were obtained through experiments and measurements: 1. An optimal electrolyte concentration of about 0.33 M was found, at which the cell achieved maximum short circuit current and open circuit voltage. 2. The Jsc of sprayed and sintered thin film-dielectric (0.33M) batteries were 160μA / cm ~ 2 and 420μA / cm ~ 2, respectively, in natural sunlight than that of Chartier’s similar sprayed CdS film - 1M ) The cell measured Jsc = 32μA / cm ~ 2 5-14 times at 100mW / cm ~ 2 Hg, Voc of 0.34V and 0.50V for the corresponding sprayed and sintered cell, respectively, the former is Voc = 0.36 volts, the latter is higher than 1/3. 3. The characteristics of the Ⅰ-Ⅴ curve measured under sunlight are inferior, and the fill factor FF is below 0.25, indicating that there is a great series resistance in such a battery. This situation also exists in the Chartier’s experimental results.