  In the current study easy method to synthesize C12A7 particles with cubic
morphology was investigated for the application of Transparent Conducting Oxide
layer in thinfilm solar cell. By self-combustion method with proper amount of
urea addition, cubic and foamy structures of C12A7 were achieved at 950 {\deg}C
and at 510 {\deg}C respectively. Pure C12A7 formation confirmed by P-XRD and
growth mechanism of the cubes was also understood by SEM and FT-IR analysis.
Further the band gap was measured 3.07 eV in case of 510 {\deg}C and 3.32 eV in
case of 950 {\deg}C synthesized particles with the help of UV-Vis analysis.
During PL single sharp peaks at 399 nm noticed which indicates less defective
C12A7 at 950 {\deg}C, confirmed by XRD having more crystallinity and less
strain. No trap state or radiative recombination observed in case of C12A7
synthesized at 950 {\deg}C sample. Conductivity from conductometry titration
method was found to be 9.223 mS at 26.3 {\deg}C and 747.33 mS at 26.4 {\deg}C
for 510 {\deg}C and 950 {\deg}C synthesized samples respectively.
