Abstract：
:The development of high efficiency solar cells relies on the management of electronic and optical properties that need to be accurately measured. As the conversion efficiencies increase, there is a concomitant electronic and photonic contribution that affects the overall performances. Here we show an optical method to quantify several transport properties of semiconducting materials and the use of multidimensional imaging techniques allows decoupling and quantifying the electronic and photonic contributions. Example of application is shown on halide perovskite thin film for which a large range of transport properties is given in the literature. We therefore optically measure pure carrier diffusion properties and evidence the contribution of optical effects such as the photon recycling as well as the photon propagation where emitted light is laterally transported without being reabsorbed. This latter effect has to be considered to avoid overestimated transport properties such as carrier mobility, diffusion length or diffusion coefficient.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Bercegol A,Ory D,Suchet D,Cacovich S,Fournier O,Rousset J,Lombez Ldoi
10.1038/s41467-019-09527-wsubject
Has Abstractpub_date
2019-04-08 00:00:00pages
1586issue
1issn
2041-1723pii
10.1038/s41467-019-09527-wjournal_volume
10pub_type
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