After the precursor's thermal decomposition under the protection of nitrogen,a kind of nonstoichiometric titanium oxide can be prepared.

用钛粉和草酸反应制得前驱物,氮600℃热分解前驱物制备了一种非化计量钛氧化物。

In the presence of impurities or in a nonstoichiometric solid, free electrons or electron holes are produced as a result of “charge compensation” to neutralize the effect of charged ionic defects 。

杂质存的情况，非化计量比的固体中，为了中和带电离子缺陷所引起的电荷不平衡，便会产生自由电子电子空穴。