Strategies for realizing high-efficiency silicon heterojunction solar
In this study, we present strategies to realize high-efficiency SHJ solar cells through combined theoretical and experimental studies, starting from the optimization of Si
Heterojunction solar cells (HJT), variously known as Silicon heterojunctions (SHJ) or Heterojunction with Intrinsic Thin Layer (HIT), are a family of photovoltaic cell technologies based on a heterojunction formed between semiconductors with dissimilar band gaps.
Silicon-based heterojunction solar cells (Si-HJT) are a hot topic within crystalline silicon photovoltaic as it allows for solar cells with record-efficiency energy conversion up to 26.6% (Fig. 1, see also Yoshikawa et al., Nature Energy 2, 2017).
In the case of front grids, the grid geometry is optimised such to provide a low resistance contact to all areas of the solar cell surface without excessively shading it from sunlight. Heterojunction solar cells are typically metallised (ie. fabrication of the metal contacts) in two distinct methods.
The structure of organic–inorganic heterojunction hybrid solar cells is composed of four components, such as the anode, the hole transport layer, the photoactive layer, and the cathode. These components are each reviewed below.
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