Abstract
We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.
| Original language | English |
|---|---|
| Pages (from-to) | 343-348 |
| Number of pages | 6 |
| Journal | Organic Electronics: physics, materials, applications |
| Volume | 63 |
| DOIs | |
| Publication status | Published - 2018 Dec 1 |
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Keywords
- Interface passivation
- Micro-photoluminescence
- Perovskite solar cell
- Strontium oxide
- UV stability
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering
Cite this
Enhanced UV stability of perovskite solar cells with a SrO interlayer. / Lee, Sang Won; Kim, Seongtak; Bae, Soohyun; Cho, Kyungjin; Chung, Taewon; Hwang, Jae Keun; Song, Inseol; Lee, Wonkyu; Park, Sungeun; Jung, Jaebong; Chun, Jihun; Lee, Yoon Jung; Moon, Yeon Ji; Lee, Haeseok; Kim, Donghwan; Mo, Chan Bin; Kang, Yoon Mook.
In: Organic Electronics: physics, materials, applications, Vol. 63, 01.12.2018, p. 343-348.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced UV stability of perovskite solar cells with a SrO interlayer
AU - Lee, Sang Won
AU - Kim, Seongtak
AU - Bae, Soohyun
AU - Cho, Kyungjin
AU - Chung, Taewon
AU - Hwang, Jae Keun
AU - Song, Inseol
AU - Lee, Wonkyu
AU - Park, Sungeun
AU - Jung, Jaebong
AU - Chun, Jihun
AU - Lee, Yoon Jung
AU - Moon, Yeon Ji
AU - Lee, Haeseok
AU - Kim, Donghwan
AU - Mo, Chan Bin
AU - Kang, Yoon Mook
PY - 2018/12/1
Y1 - 2018/12/1
N2 - We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.
AB - We investigated strontium oxide (SrO) as an interlayer material to enhance the UV stability of a CH3NH3PbI3 perovskite solar cell. Moisture and over 400 nm wavelength of light were excluded to investigate the effect of UV light only. Two different interlayer fabrication processes were examined to optimize the performance of this solar cell. Devices fabricated by dipping for 30 min in SrO solution exhibited photoconversion efficiencies of 15.5%, whereas those fabricated with 60-min dipping showed photoconversion efficiencies of 15% and exhibited local Sr agglomeration. Devices with SrO displayed lower initial efficiencies than those without any SrO layer (17.6%), However, a device without SrO retained only 34.4% of its initial efficiency after 100 h of UV exposure. In contrast, SrO-incorporated devices retained almost 60.0% of their initial efficiency. Severe μ-PL mapping intensity degradation was observed in devices that did not include the interlayer, but no degradation was observed in those with the SrO interlayer. This can be attributed to the passivation of the degradation sites by SrO.
KW - Interface passivation
KW - Micro-photoluminescence
KW - Perovskite solar cell
KW - Strontium oxide
KW - UV stability
UR - http://www.scopus.com/inward/record.url?scp=85054327226&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85054327226&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2018.09.019
DO - 10.1016/j.orgel.2018.09.019
M3 - Article
AN - SCOPUS:85054327226
VL - 63
SP - 343
EP - 348
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
ER -