New role of thin films in advanced photovoltaics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00554249" target="_blank" >RIV/68378271:_____/21:00554249 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

New role of thin films in advanced photovoltaics

Original language description

Currently, photovoltaics has become an established industrial field with the global installed capacity over 500 GWp and with a perspective of reaching the terawatt installed capacity within the following decade. The field is dominated by silicon wafer-based cells for which previously unforeseen low system prices have been reached. The advantages of photovoltaics based on silicon thin film (lower consumption of energy-costly silicon and thus shorter energy payback time) have not been sufficient to overcome the disadvantage of lower efficiencies (12 % record efficiency vs. ~25 %). Thus, the development and production of silicon thin film photovoltaics has nearly stopped. The other types of thin film-based PV (CdTe, CIS) struggle as well. Yet, the highest recent efficiencies have been achieved by merging both technologies [1]: Si wafers for photogeneration and thin films for selective passivated contacting scheme. The record efficiency [2] reached 26.7 % by using silicon heterojunction (SHJ) cells with interdigitated back contacts composed of intrinsic and either n or p-type hydrogenated amorphous silicon layers with thicknesses of ~ 10 nm. Many variations of solar cells with carrier-selective passivation contacts (e.g. TOPCON or POLO) are also being explored.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů