The PL spectra and light-to-electricity conversion results of Sample B for the resonant excitation by light with a wavelength of 915 nm under an incident light with a power of 65 mW. (a) PL spectra of Sample A collected under the short- and open-circuit conditions. The PL integrated intensity is reduced by 88% when the circuit is changed from open to short. Meanwhile, the PL peak position is blue-shifted from 1113.8 nm in the open-circuit to 1108.6 nm in the short-circuit. This blue shift in the PL wavelength arises from the change in the Femi energy between the open- and short-circuit conditions. (b) Excitation-power-dependent PL integrated intensity and peak position variation under open- and short-circuit conditions. The ratio between the integrated PL intensity under the short-circuit condition to that under the open-circuit condition monotonically increases from 5% to 11.6%. The PL peak position is blue-shifted from 1118.4 nm to 1114 nm under the open-circuit condition and from 1115 nm to 1109 nm under short-circuit condition. The PL peak position is blue-shifted when the laser power increases because of the band-filling effect. (c) Excitation-power-dependent open-circuit voltage (V_oc) and short-circuit current (J_sc) at 150 K. The J_sc is proportional to the incident light intensity, and the V_oc is proportional to the logarithm of the incident light intensity. (d) Inversely linearly related circuit current and PL intensity of Sample B under a 65-mW excitation power at 150 K.