Abstract
Perovskite solar cells typically comprise electron- and hole-transport materials deposited on each side of a perovskite active layer. So far, only two organic hole-transport materials have led to state-of-the-art performance in these solar cells 1 : poly(triarylamine) (PTAA) 2–5 and 2,2ʹ,7,7ʹ-tetrakis(N,N-di-p-methoxyphenylamine)-9,9ʹ-spirobifluorene (spiro-OMeTAD) 6,7 . However, these materials have several drawbacks in terms of commercialization, including high cost 8 , the need for hygroscopic dopants that trigger degradation of the perovskite layer 9 and limitations in their deposition processes 10 . Poly(3-hexylthiophene) (P3HT) is an alternative hole-transport material with excellent optoelectronic properties 11–13 , low cost 8,14 and ease of fabrication 15–18 , but so far the efficiencies of perovskite solar cells using P3HT have reached only around 16 per cent 19 . Here we propose a device architecture for highly efficient perovskite solar cells that use P3HT as a hole-transport material without any dopants. A thin layer of wide-bandgap halide perovskite is formed on top of the narrow-bandgap light-absorbing layer by an in situ reaction of n-hexyl trimethyl ammonium bromide on the perovskite surface. Our device has a certified power conversion efficiency of 22.7 per cent with hysteresis of ±0.51 per cent; exhibits good stability at 85 per cent relative humidity without encapsulation; and upon encapsulation demonstrates long-term operational stability for 1,370 hours under 1-Sun illumination at room temperature, maintaining 95 per cent of the initial efficiency. We extend our platform to large-area modules (24.97 square centimetres)—which are fabricated using a scalable bar-coating method for the deposition of P3HT—and achieve a power conversion efficiency of 16.0 per cent. Realizing the potential of P3HT as a hole-transport material by using a wide-bandgap halide could be a valuable direction for perovskite solar-cell research.
| Original language | English |
|---|---|
| Pages (from-to) | 511-515 |
| Number of pages | 5 |
| Journal | Nature |
| Volume | 567 |
| Issue number | 7749 |
| DOIs | |
| Publication status | Published - 2019 Mar 28 |
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Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene). / Jung, Eui Hyuk; Jeon, Nam Joong; Park, Eun Young; Moon, Chan Su; Shin, Tae Joo; Yang, Tae Youl; Noh, Jun Hong; Seo, Jangwon.
In: Nature, Vol. 567, No. 7749, 28.03.2019, p. 511-515.Research output: Contribution to journal › Letter
}
TY - JOUR
T1 - Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene)
AU - Jung, Eui Hyuk
AU - Jeon, Nam Joong
AU - Park, Eun Young
AU - Moon, Chan Su
AU - Shin, Tae Joo
AU - Yang, Tae Youl
AU - Noh, Jun Hong
AU - Seo, Jangwon
PY - 2019/3/28
Y1 - 2019/3/28
N2 - Perovskite solar cells typically comprise electron- and hole-transport materials deposited on each side of a perovskite active layer. So far, only two organic hole-transport materials have led to state-of-the-art performance in these solar cells 1 : poly(triarylamine) (PTAA) 2–5 and 2,2ʹ,7,7ʹ-tetrakis(N,N-di-p-methoxyphenylamine)-9,9ʹ-spirobifluorene (spiro-OMeTAD) 6,7 . However, these materials have several drawbacks in terms of commercialization, including high cost 8 , the need for hygroscopic dopants that trigger degradation of the perovskite layer 9 and limitations in their deposition processes 10 . Poly(3-hexylthiophene) (P3HT) is an alternative hole-transport material with excellent optoelectronic properties 11–13 , low cost 8,14 and ease of fabrication 15–18 , but so far the efficiencies of perovskite solar cells using P3HT have reached only around 16 per cent 19 . Here we propose a device architecture for highly efficient perovskite solar cells that use P3HT as a hole-transport material without any dopants. A thin layer of wide-bandgap halide perovskite is formed on top of the narrow-bandgap light-absorbing layer by an in situ reaction of n-hexyl trimethyl ammonium bromide on the perovskite surface. Our device has a certified power conversion efficiency of 22.7 per cent with hysteresis of ±0.51 per cent; exhibits good stability at 85 per cent relative humidity without encapsulation; and upon encapsulation demonstrates long-term operational stability for 1,370 hours under 1-Sun illumination at room temperature, maintaining 95 per cent of the initial efficiency. We extend our platform to large-area modules (24.97 square centimetres)—which are fabricated using a scalable bar-coating method for the deposition of P3HT—and achieve a power conversion efficiency of 16.0 per cent. Realizing the potential of P3HT as a hole-transport material by using a wide-bandgap halide could be a valuable direction for perovskite solar-cell research.
AB - Perovskite solar cells typically comprise electron- and hole-transport materials deposited on each side of a perovskite active layer. So far, only two organic hole-transport materials have led to state-of-the-art performance in these solar cells 1 : poly(triarylamine) (PTAA) 2–5 and 2,2ʹ,7,7ʹ-tetrakis(N,N-di-p-methoxyphenylamine)-9,9ʹ-spirobifluorene (spiro-OMeTAD) 6,7 . However, these materials have several drawbacks in terms of commercialization, including high cost 8 , the need for hygroscopic dopants that trigger degradation of the perovskite layer 9 and limitations in their deposition processes 10 . Poly(3-hexylthiophene) (P3HT) is an alternative hole-transport material with excellent optoelectronic properties 11–13 , low cost 8,14 and ease of fabrication 15–18 , but so far the efficiencies of perovskite solar cells using P3HT have reached only around 16 per cent 19 . Here we propose a device architecture for highly efficient perovskite solar cells that use P3HT as a hole-transport material without any dopants. A thin layer of wide-bandgap halide perovskite is formed on top of the narrow-bandgap light-absorbing layer by an in situ reaction of n-hexyl trimethyl ammonium bromide on the perovskite surface. Our device has a certified power conversion efficiency of 22.7 per cent with hysteresis of ±0.51 per cent; exhibits good stability at 85 per cent relative humidity without encapsulation; and upon encapsulation demonstrates long-term operational stability for 1,370 hours under 1-Sun illumination at room temperature, maintaining 95 per cent of the initial efficiency. We extend our platform to large-area modules (24.97 square centimetres)—which are fabricated using a scalable bar-coating method for the deposition of P3HT—and achieve a power conversion efficiency of 16.0 per cent. Realizing the potential of P3HT as a hole-transport material by using a wide-bandgap halide could be a valuable direction for perovskite solar-cell research.
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U2 - 10.1038/s41586-019-1036-3
DO - 10.1038/s41586-019-1036-3
M3 - Letter
VL - 567
SP - 511
EP - 515
JO - Nature Cell Biology
JF - Nature Cell Biology
SN - 1465-7392
IS - 7749
ER -