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测量了正常态YBa2Cu3O7-x薄膜在不同波长激光照射下的光响应信号，并对其进行理论分析和研究。研究结果表明：正常态YBa2Cu3O7-x薄膜的光响应信号属于Seebeck热电效应，并且其热电信号与光波波长几乎无关，随着薄膜斜射角α（薄膜的C轴与膜表面的夹角）的增加而线性地增大，最大值为α≈15°，U≈10－2V／W。这为研究长波段、高灵敏度的光探测器提供了一条新的途径。
The photoresponse signals of normal YBa2Cu3O7-x thin films irradiated by different wavelengths were measured and analyzed theoretically. The results show that the photoresponse signal of normal YBa2Cu3O7-x film belongs to Seebeck thermoelectric effect, and the thermoelectric signal has almost no relation with the wavelength of light. With the increase of the angle α of the film (the angle between the film C axis and the film surface) Increases linearly with a maximum of α≈15 ° and U≈10-2V / W. This provides a new way for the study of long-wavelength, high-sensitivity photodetectors.