High-Performance Chlorophyll-b/Si Nanowire Heterostructure for Self-Biasing Bioinorganic Hybrid Photodetectors

High-Performance Chlorophyll-b/Si Nanowire Heterostructure for Self-Biasing Bioinorganic Hybrid Photodetectors

As one kind of ecofriendly organic semiconductor materials, chlorophyll has attracted great attention with useful optical properties. Although pigments such as chlorophyll-a (Chl-a) are explored widely, chlorophyll-b (Chl-b) is rarely studied even though it possesses outstanding optical properties w...

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Veröffentlicht in:ACS applied nano materials 2021-06, Vol.4 (6), p.5726-5736
Hauptverfasser: Mondal, Hasmat, Ray, Samit K, Chakrabarty, Poulomi, Pal, Soumili, Gangopadhyay, Gaurab, Das, Sourav, Das, Shreyasi, Basori, Rabaya
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container_end_page 5736
container_issue 6
container_start_page 5726
container_title ACS applied nano materials
container_volume 4
creator Mondal, Hasmat
Ray, Samit K
Chakrabarty, Poulomi
Pal, Soumili
Gangopadhyay, Gaurab
Das, Sourav
Das, Shreyasi
Basori, Rabaya
description As one kind of ecofriendly organic semiconductor materials, chlorophyll has attracted great attention with useful optical properties. Although pigments such as chlorophyll-a (Chl-a) are explored widely, chlorophyll-b (Chl-b) is rarely studied even though it possesses outstanding optical properties with impressive stability. Here, Chl-b is extracted from spinach leaves using a very simple and cost-effective method to study its potential use on Si nanowire (NW) heterostructures having volume concentration varying from 0 to 6%. In comparison to the control Si NW device, the Chl-b/SiNW heterostructure exhibits superior optoelectronic performances including high on/off ratio (∼103), good external quantum efficiency (∼208%), high responsivity (∼0.73 A/W), improved detectivity (∼2.2 × 1012 Jones), and relatively faster response time (
doi_str_mv 10.1021/acsanm.1c00517
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