The major issues of Micro-Thermo-Photo-Voltaic (MTPV) micro-combustors are flame instabilities,which narrow the operational range,and non-uniform wall temperature,which lowers the overall efficiency.The purpose of the present research is to propose a novel micro-combustor with combined baffle and cavity configuration to address these issues.For this aim,a numerical modeling approach is validated and used.The performance of the improved combustor is compared with another recent baffle-bluffconflguration.It is shown that the novel design improves the average wall temperature by 36.4 K and mitigates its standard deviation by 13.4 K.Moreover,using the optimal baffle thickness,these enhancements can be augmented by4％ raise of average wall temperature,62％ increase of temperature uniformity,and 20％ reduction in overall emission.The baffle length of 0.6 times the com bustor length and thickness of 0.0625 times the baffle sparing result in the optimal operation due to the flamelift-offin the upstream direction.According to the sensitivity analysis,the most effective geometrical parameters are the baffle length and thickness.It is expected that using this novel micro-combustor with optimized design parameters improves the overall efficiency of MTPV systems.