
0 引言
1 “预成核”策略制备NiOx基钙钛矿太阳能电池
Fig. 3 XRD spectrum of perovskite precursor solution after spin coating at 6 000 r/min in ambient air and in glovebox for 20 s (a) and 2 min (b); XRD spectrum of 1.79 mol/L perovskite precursor solution (c), and the solution of PbI2 in DMSO after adding water (d) [4]图 3 钙钛矿前驱液分别在空气和手套箱中以6 000 r/min转速旋涂20 s(a)和2 min(b)的XRD谱图; 1.79 mol/L的钙钛矿前驱液(c)和PbI2的DMSO溶液(d)(1 mmol PbI2溶解于700 mL DMSO)加入不同体积比水形成的中间相的XRD谱图(以上XRD谱图均由新鲜样品在小自封袋内进行测试,防止空气中水汽吸收对测试过程产生影响)[4] |
Fig. 4 (a) Schematic diagram of home-made equipment set up for in-situ monitoring the spin-coating process: it consists of a UV-Vis fiber optic spectrometer and a spin coater; in-situ UV-vis absorption spectra of the wet precursor film without antisolvent dripping (b), using the conventional one time antisolvent dripping (c), using the prenucleation antisolvent dripping (e); UV-vis absorption spectra of films after one time antisolvent dripping (d) and prenucleation antisolvent dripping[4] (f)图 4 (a)由紫外可见光纤光谱仪和匀胶机构成而搭建的旋涂原位监测设备示意图;空气中不滴加反溶剂(b)、传统的一次反溶剂滴加(c)和“预成核”策略两次反溶剂滴加(e)旋涂过程的实时紫外可见吸收谱图;传统的一次反溶剂滴加(d)和“预成核”策略两次反溶剂滴加(f)旋涂结束后静置时的紫外可见吸收谱图[4] |