  X-ray absorption near edge structure (XANES), resistivity and thermoelectric
power have been measured on Pr1-xCaxBa2Cu3O7. These data reveal an intriguing
electronic structure in Pr-doped cuprates. The absorption peak in XANES
associated with the Fehrenbacher-Rice (FR) band has been identified. The
Ca-doped holes in Pr1-xCaxBa2Cu3O7 go to both the Zhang-Rice (ZR) and FR bands.
Comparative studies on the related samples suggest that the FR band is
partially filled and highly localized. Implications of these results on other
recent experiments, such as the observation of superconductivity in PrBa2Cu3O7
single crystals, are discussed.
