Gas sensing with solar cells: The case of NH3 detection through nanocarbon/silicon hybrid heterojunctions

Giovanni Drera; Sonia Freddi; Tiziano Freddi; Federico Alberto De Poli; Stefania Pagliara; Maurizio De Crescenzi; Paola Castrucci; Luigi Ermenegildo Sangaletti

doi:10.3390/nano10112303

Gas sensing with solar cells: The case of NH3 detection through nanocarbon/silicon hybrid heterojunctions

Giovanni Drera, Sonia Freddi, Tiziano Freddi, Federico Alberto De Poli, Stefania Pagliara, Maurizio De Crescenzi, Paola Castrucci, Luigi Ermenegildo Sangaletti

University of Rome Tor Vergata

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Photovoltaic (PV) cells based on single-walled carbon nanotube (SWCNT)/silicon (Si) and multiwalled carbon nanotube (MWCNT)/Si junctions were tested under exposure to NH3 in the 0–21 ppm concentration range. The PV cell parameters remarkably changed upon NH3 exposure, suggesting that these junctions, while being operated as PV cells, can react to changes in the environment, thereby acting as NH3 gas sensors. Indeed, by choosing the open-circuit voltage, VOC, parameter as read-out, it was found that these cells behaved as gas sensors, operating at room temperature with a response higher than chemiresistors developed on the same layers. The sensitivity was further increased when the whole current–voltage (I–V) curve was collected and the maximum power values were tracked upon NH3 exposure.

Original language	English
Pages (from-to)	1-11
Number of pages	11
Journal	Nanomaterials
Volume	10
DOIs	https://doi.org/10.3390/nano10112303
Publication status	Published - 2020

Keywords

CNT/Si heterojunctions
Carbon nanotubes
Gas sensing
PV cells
ammonia

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.3390/nano10112303

Cite this

@article{ae5b9d7e9566489bbafb8867c820d2a5,

title = "Gas sensing with solar cells: The case of NH3 detection through nanocarbon/silicon hybrid heterojunctions",

abstract = "Photovoltaic (PV) cells based on single-walled carbon nanotube (SWCNT)/silicon (Si) and multiwalled carbon nanotube (MWCNT)/Si junctions were tested under exposure to NH3 in the 0–21 ppm concentration range. The PV cell parameters remarkably changed upon NH3 exposure, suggesting that these junctions, while being operated as PV cells, can react to changes in the environment, thereby acting as NH3 gas sensors. Indeed, by choosing the open-circuit voltage, VOC, parameter as read-out, it was found that these cells behaved as gas sensors, operating at room temperature with a response higher than chemiresistors developed on the same layers. The sensitivity was further increased when the whole current–voltage (I–V) curve was collected and the maximum power values were tracked upon NH3 exposure.",

keywords = "CNT/Si heterojunctions, Carbon nanotubes, Gas sensing, PV cells, ammonia, CNT/Si heterojunctions, Carbon nanotubes, Gas sensing, PV cells, ammonia",

author = "Giovanni Drera and Sonia Freddi and Tiziano Freddi and {De Poli}, {Federico Alberto} and Stefania Pagliara and {De Crescenzi}, Maurizio and Paola Castrucci and Sangaletti, {Luigi Ermenegildo}",

year = "2020",

doi = "10.3390/nano10112303",

language = "English",

volume = "10",

pages = "1--11",

journal = "Nanomaterials",

issn = "2079-4991",

publisher = "Basel : MDPI",

}

TY - JOUR

T1 - Gas sensing with solar cells: The case of NH3 detection through nanocarbon/silicon hybrid heterojunctions

AU - Drera, Giovanni

AU - Freddi, Sonia

AU - Freddi, Tiziano

AU - De Poli, Federico Alberto

AU - Pagliara, Stefania

AU - De Crescenzi, Maurizio

AU - Castrucci, Paola

AU - Sangaletti, Luigi Ermenegildo

PY - 2020

Y1 - 2020

N2 - Photovoltaic (PV) cells based on single-walled carbon nanotube (SWCNT)/silicon (Si) and multiwalled carbon nanotube (MWCNT)/Si junctions were tested under exposure to NH3 in the 0–21 ppm concentration range. The PV cell parameters remarkably changed upon NH3 exposure, suggesting that these junctions, while being operated as PV cells, can react to changes in the environment, thereby acting as NH3 gas sensors. Indeed, by choosing the open-circuit voltage, VOC, parameter as read-out, it was found that these cells behaved as gas sensors, operating at room temperature with a response higher than chemiresistors developed on the same layers. The sensitivity was further increased when the whole current–voltage (I–V) curve was collected and the maximum power values were tracked upon NH3 exposure.

AB - Photovoltaic (PV) cells based on single-walled carbon nanotube (SWCNT)/silicon (Si) and multiwalled carbon nanotube (MWCNT)/Si junctions were tested under exposure to NH3 in the 0–21 ppm concentration range. The PV cell parameters remarkably changed upon NH3 exposure, suggesting that these junctions, while being operated as PV cells, can react to changes in the environment, thereby acting as NH3 gas sensors. Indeed, by choosing the open-circuit voltage, VOC, parameter as read-out, it was found that these cells behaved as gas sensors, operating at room temperature with a response higher than chemiresistors developed on the same layers. The sensitivity was further increased when the whole current–voltage (I–V) curve was collected and the maximum power values were tracked upon NH3 exposure.

KW - CNT/Si heterojunctions

KW - Carbon nanotubes

KW - Gas sensing

KW - PV cells

KW - ammonia

KW - CNT/Si heterojunctions

KW - Carbon nanotubes

KW - Gas sensing

KW - PV cells

KW - ammonia

UR - http://hdl.handle.net/10807/169749

U2 - 10.3390/nano10112303

DO - 10.3390/nano10112303

M3 - Article

SN - 2079-4991

VL - 10

SP - 1

EP - 11

JO - Nanomaterials

JF - Nanomaterials

ER -

Gas sensing with solar cells: The case of NH3 detection through nanocarbon/silicon hybrid heterojunctions

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this