Featured in Wired for Watts – 11-2021

Looking past PERC

While the adoption of large-format wafers has driven a wave of capacity expansion for PERC, existing manufacturers and new entrants continue to evaluate TOPCon and HJT. An increasing number of HJT pilot lines and gigawatt-scale capacity expansion projects are appearing, as manufacturers see the advantages of fewer process steps, higher efficiency ratings, and better yield rates. The localization of equipment is also a driving factor. PV InfoLink’s Derek Zhao offers an update on the latest developments and process routes for HJT.

By

pv magazine

02 Nov 2021

Source: PV InfoLink

From pv magazine 11/2021 Amorphous silicon (a-Si) deposition is the core process for HJT cells and the key to their electrical properties. The process completes the p-n junction through chemical vapor deposition of intrinsic hydrogenated amorphous silicon (a-Si:H), p-type a-Si:H (around 5 nm), and n-type a-Si:H (around 5 nm). Plasma enhanced chemical vapor deposition (PECVD) …

This article is part of pv+

Subscribe digitally to unlock exclusive investigative reporting, expert insights, in-depth analysis, and premium background coverage. Your subscription also includes full access to the digital edition of our magazine.