402
N. Kumari et al.
Fig. 6 AFM image of prepared MAPbI 3 films at different annealing temperatures
Fig. 7 Absorption spectra of prepared MAPbI 3 films at different substrate temperatures
were acquired at 14.34°, 28.42°, and 32.06° comparing to the planes (110), (220),
and (310), respectively. The structural properties of MAPbI 3 films at different spin
speed remains almost unchanged as can be seen from Fig. 8. Therefore, further
analysis was not done at different spin speeds. The PCE of the device acquired at
N. Kumari et al.
Fig. 6 AFM image of prepared MAPbI 3 films at different annealing temperatures
Fig. 7 Absorption spectra of prepared MAPbI 3 films at different substrate temperatures
were acquired at 14.34°, 28.42°, and 32.06° comparing to the planes (110), (220),
and (310), respectively. The structural properties of MAPbI 3 films at different spin
speed remains almost unchanged as can be seen from Fig. 8. Therefore, further
analysis was not done at different spin speeds. The PCE of the device acquired at