TY - JOUR
T1 - Stretchable ITO-Free Organic Solar Cells with Intrinsic Anti-Reflection Substrate for High-Efficiency Outdoor and Indoor Energy Harvesting
AU - Huang, Jiaming
AU - Ren, Zhiwei
AU - Zhang, Yaokang
AU - Liu, Kuan
AU - Zhang, Hengkai
AU - Tang, Hua
AU - Yan, Cenqi
AU - Zheng, Zijian
AU - Li, Gang
N1 - Funding Information:
This work was supported by Research Grants Council of Hong Kong (Project Nos. 15320216, 15218517, C5037‐18G), National Natural Science Foundation of China (51961165102), Shenzhen Science and Technology Innovation Commission (JCYJ20170413154602102), and the Hong Kong Polytechnic University Internal Research Funds: Project of Strategic Importance (1‐ZE29), Sir Sze‐yuen Chung Endowed Professorship Fund (8‐8480), University Supporting Fund for Major Research (1‐BBAS).
Funding Information:
This work was supported by Research Grants Council of Hong Kong (Project Nos. 15320216, 15218517, C5037-18G), National Natural Science Foundation of China (51961165102), Shenzhen Science and Technology Innovation Commission (JCYJ20170413154602102), and the Hong Kong Polytechnic University Internal Research Funds: Project of Strategic Importance (1-ZE29), Sir Sze-yuen Chung Endowed Professorship Fund (8-8480), University Supporting Fund for Major Research (1-BBAS).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Flexible photovoltaic devices are promising candidates for triggering the Internet of Things (IoT). However, the power conversion efficiencies (PCEs) of flexible organic photovoltaic (OPV) devices with high conductivity poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes on plastic are lagging behind the rigid devices due to the low transmittance of polyethylene terephthalate (PET)/PEDOT:PSS. Moreover, the poor stretchability of the commonly used plastic substrates largely hinders the practical application of wearable devices. Herein, a novel stretchable indium tin oxide (ITO)-free OPV device with a surface-texturing polydimethylsiloxane (PDMS) substrate for outdoor strong- and indoor dim-light energy harvesting is reported. The high diffuse transmittance and haze effect of the substrate enable stretchable ITO-free devices, yielding a high PCE of 15.3% under 1 sun illumination. More excitingly, the stretchable device based on textured PDMS/PEDOT:PSS maintains a comparable PCE of 20.5% (20.8% for the rigid device) under indoor light illumination. Notably, the stretchable device is much more insensitive to the light direction, maintaining 38.5% of the initial PCE at an extremely small incident angle of 10° (16.3% for glass/ITO-based counterpart). The texturing stretchable substrate provides a new direction for achieving high performance and enhanced light utilization for the stretchable light-harvesting device, suitable for indoor and outdoor applications.
AB - Flexible photovoltaic devices are promising candidates for triggering the Internet of Things (IoT). However, the power conversion efficiencies (PCEs) of flexible organic photovoltaic (OPV) devices with high conductivity poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes on plastic are lagging behind the rigid devices due to the low transmittance of polyethylene terephthalate (PET)/PEDOT:PSS. Moreover, the poor stretchability of the commonly used plastic substrates largely hinders the practical application of wearable devices. Herein, a novel stretchable indium tin oxide (ITO)-free OPV device with a surface-texturing polydimethylsiloxane (PDMS) substrate for outdoor strong- and indoor dim-light energy harvesting is reported. The high diffuse transmittance and haze effect of the substrate enable stretchable ITO-free devices, yielding a high PCE of 15.3% under 1 sun illumination. More excitingly, the stretchable device based on textured PDMS/PEDOT:PSS maintains a comparable PCE of 20.5% (20.8% for the rigid device) under indoor light illumination. Notably, the stretchable device is much more insensitive to the light direction, maintaining 38.5% of the initial PCE at an extremely small incident angle of 10° (16.3% for glass/ITO-based counterpart). The texturing stretchable substrate provides a new direction for achieving high performance and enhanced light utilization for the stretchable light-harvesting device, suitable for indoor and outdoor applications.
KW - anti-reflection
KW - indoor applications, ITO-free
KW - outdoor applications
KW - stretchable photovoltaic electronics
KW - texturing stretchable substrates
UR - http://www.scopus.com/inward/record.url?scp=85100888901&partnerID=8YFLogxK
U2 - 10.1002/adfm.202010172
DO - 10.1002/adfm.202010172
M3 - Journal article
AN - SCOPUS:85100888901
SN - 1616-301X
VL - 31
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 16
M1 - 2010172
ER -
