... was the electrical conductivity, R was thetested value of resisti vity, S was the area of the effectivemeasuring electrode, and h was the thickness of thesamples. It is found that the s of ... 0.337, and a PCE o f 1.04%. With doping 1and2 mMAlconcentrations,theJSC of devicesincreases to 10.26 and 11.08 mA cm-2,andthePCEincreases to 1.26% and 1.44%, respectively. Withincreasing ... gjfang@whu.edu.cnKey Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Department of Electronic Science and Technology, School of Physics and Technology, Wuhan University,...