The charm of entwining two major competitors CZTS & CH3NH3SnI3 to feasibly explore photovoltaic world beyond Shockley–Queisser limit

A comprehensive review on potential of diffusion length enhancement to upraise perovskite solar cell performance

“…Thus, with increase in shunt resistance and decrease in series resistance, the current density within SC increases and results in increased PCE [109]. The J-V curve of SC also tends to approach ideal nature due to increase in shunt resistance and decrease in series resistance is shown using the figure 2 [90]. As the J-V curve tends to the ideal curve, the squareness of the graph enhances.…”

“…Optimization of band alignment is a very widely implemented designing technique in photovoltaic technology to enhance diffusion length [86][87][88][89][90]. This helps SC engineer to create hole-free space for electrons to flow towards electrode.…”

“…Apart from the diffusion length enhancement, the another famously adopted method that gained prominence to increase the PCE of SC is the band-structure fine tuning to achieve the band offset optimization [89]. Takashi et al and Ding et al vividly demonstrated the effect of band offset optimization on SC performance parameters through their research work [86,88,90,93,137]. Hence, in this paper, we have presented a comparative study based on the extent of effect of the two strategies: the diffusion length enhancement and the band offset optimization, on the SC performance.…”