Tuning perovskite morphology by polymer additive for high efficiency solar cell

Chih Yu Chang, Cheng Ya Chu, Yu Ching Huang, Chien Wen Huang, Shuang Yuan Chang, Chien An Chen, Chi Yang Chao, Wei Fang Su

Research output: Contribution to journalArticle

154 Citations (Scopus)

Abstract

Solution processable planar heterojunction perovskite solar cell is a very promising new technology for low cost renewable energy. One of the most common cell structures is FTO/TiO 2 /CH 3 NH 3 PbI 3-x Cl x /spiro-OMeTAD/Au. The main issues of this type of solar cell are the poor coverage and morphology control of the perovskite CH 3 NH 3 PbI 3-x Cl x film on TiO 2 . For the first time, we demonstrate that the problems can be easily resolved by using a polymer additive in perovskite precursor solution during the film formation process. A 25% increase in power conversion efficiency at a value of 13.2% is achieved by adding 1 wt % of poly(ethylene glycol) in the perovskite layer using a 150 °C processed TiO 2 nanoparticle layer. The morphology of this new perovskite was carefully studied by SEM, XRD, and AFM. The results reveal that the additive controls the size and aggregation of perovskite crystals and helps the formation of smooth film over TiO 2 completely. Thus, the V oc and J sc are greatly increased for a high efficiency solar cell. The amount of additive is optimized at 1 wt % due to its insulating characteristics. This research provides a facile way to fabricate a high efficiency perovskite solar cell by the low temperature solution process (<150 °C), which has the advancement of conserving energy over the traditional high temperature sintering TiO 2 compact layer device.

Original languageEnglish
Pages (from-to)4955-4961
Number of pages7
JournalACS Applied Materials and Interfaces
Volume7
Issue number8
DOIs
Publication statusPublished - Mar 4 2015
Externally publishedYes

Fingerprint

Perovskite
Solar cells
Polymers
Tuning
Polyethylene glycols
Conversion efficiency
Heterojunctions
Sintering
Agglomeration
perovskite
Nanoparticles
Temperature
Crystals
Scanning electron microscopy
Costs
Perovskite solar cells

Keywords

  • coverage
  • morphology
  • perovskite solar cells
  • polymer additive
  • solution process
  • TiO nanoparticle

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Chang, C. Y., Chu, C. Y., Huang, Y. C., Huang, C. W., Chang, S. Y., Chen, C. A., ... Su, W. F. (2015). Tuning perovskite morphology by polymer additive for high efficiency solar cell. ACS Applied Materials and Interfaces, 7(8), 4955-4961. https://doi.org/10.1021/acsami.5b00052

Tuning perovskite morphology by polymer additive for high efficiency solar cell. / Chang, Chih Yu; Chu, Cheng Ya; Huang, Yu Ching; Huang, Chien Wen; Chang, Shuang Yuan; Chen, Chien An; Chao, Chi Yang; Su, Wei Fang.

In: ACS Applied Materials and Interfaces, Vol. 7, No. 8, 04.03.2015, p. 4955-4961.

Research output: Contribution to journalArticle

Chang, CY, Chu, CY, Huang, YC, Huang, CW, Chang, SY, Chen, CA, Chao, CY & Su, WF 2015, 'Tuning perovskite morphology by polymer additive for high efficiency solar cell', ACS Applied Materials and Interfaces, vol. 7, no. 8, pp. 4955-4961. https://doi.org/10.1021/acsami.5b00052
Chang, Chih Yu ; Chu, Cheng Ya ; Huang, Yu Ching ; Huang, Chien Wen ; Chang, Shuang Yuan ; Chen, Chien An ; Chao, Chi Yang ; Su, Wei Fang. / Tuning perovskite morphology by polymer additive for high efficiency solar cell. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 8. pp. 4955-4961.
@article{d9d9826bb10242b582259afe90907044,
title = "Tuning perovskite morphology by polymer additive for high efficiency solar cell",
abstract = "Solution processable planar heterojunction perovskite solar cell is a very promising new technology for low cost renewable energy. One of the most common cell structures is FTO/TiO 2 /CH 3 NH 3 PbI 3-x Cl x /spiro-OMeTAD/Au. The main issues of this type of solar cell are the poor coverage and morphology control of the perovskite CH 3 NH 3 PbI 3-x Cl x film on TiO 2 . For the first time, we demonstrate that the problems can be easily resolved by using a polymer additive in perovskite precursor solution during the film formation process. A 25{\%} increase in power conversion efficiency at a value of 13.2{\%} is achieved by adding 1 wt {\%} of poly(ethylene glycol) in the perovskite layer using a 150 °C processed TiO 2 nanoparticle layer. The morphology of this new perovskite was carefully studied by SEM, XRD, and AFM. The results reveal that the additive controls the size and aggregation of perovskite crystals and helps the formation of smooth film over TiO 2 completely. Thus, the V oc and J sc are greatly increased for a high efficiency solar cell. The amount of additive is optimized at 1 wt {\%} due to its insulating characteristics. This research provides a facile way to fabricate a high efficiency perovskite solar cell by the low temperature solution process (<150 °C), which has the advancement of conserving energy over the traditional high temperature sintering TiO 2 compact layer device.",
keywords = "coverage, morphology, perovskite solar cells, polymer additive, solution process, TiO nanoparticle",
author = "Chang, {Chih Yu} and Chu, {Cheng Ya} and Huang, {Yu Ching} and Huang, {Chien Wen} and Chang, {Shuang Yuan} and Chen, {Chien An} and Chao, {Chi Yang} and Su, {Wei Fang}",
year = "2015",
month = "3",
day = "4",
doi = "10.1021/acsami.5b00052",
language = "English",
volume = "7",
pages = "4955--4961",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "8",

}

TY - JOUR

T1 - Tuning perovskite morphology by polymer additive for high efficiency solar cell

AU - Chang, Chih Yu

AU - Chu, Cheng Ya

AU - Huang, Yu Ching

AU - Huang, Chien Wen

AU - Chang, Shuang Yuan

AU - Chen, Chien An

AU - Chao, Chi Yang

AU - Su, Wei Fang

PY - 2015/3/4

Y1 - 2015/3/4

N2 - Solution processable planar heterojunction perovskite solar cell is a very promising new technology for low cost renewable energy. One of the most common cell structures is FTO/TiO 2 /CH 3 NH 3 PbI 3-x Cl x /spiro-OMeTAD/Au. The main issues of this type of solar cell are the poor coverage and morphology control of the perovskite CH 3 NH 3 PbI 3-x Cl x film on TiO 2 . For the first time, we demonstrate that the problems can be easily resolved by using a polymer additive in perovskite precursor solution during the film formation process. A 25% increase in power conversion efficiency at a value of 13.2% is achieved by adding 1 wt % of poly(ethylene glycol) in the perovskite layer using a 150 °C processed TiO 2 nanoparticle layer. The morphology of this new perovskite was carefully studied by SEM, XRD, and AFM. The results reveal that the additive controls the size and aggregation of perovskite crystals and helps the formation of smooth film over TiO 2 completely. Thus, the V oc and J sc are greatly increased for a high efficiency solar cell. The amount of additive is optimized at 1 wt % due to its insulating characteristics. This research provides a facile way to fabricate a high efficiency perovskite solar cell by the low temperature solution process (<150 °C), which has the advancement of conserving energy over the traditional high temperature sintering TiO 2 compact layer device.

AB - Solution processable planar heterojunction perovskite solar cell is a very promising new technology for low cost renewable energy. One of the most common cell structures is FTO/TiO 2 /CH 3 NH 3 PbI 3-x Cl x /spiro-OMeTAD/Au. The main issues of this type of solar cell are the poor coverage and morphology control of the perovskite CH 3 NH 3 PbI 3-x Cl x film on TiO 2 . For the first time, we demonstrate that the problems can be easily resolved by using a polymer additive in perovskite precursor solution during the film formation process. A 25% increase in power conversion efficiency at a value of 13.2% is achieved by adding 1 wt % of poly(ethylene glycol) in the perovskite layer using a 150 °C processed TiO 2 nanoparticle layer. The morphology of this new perovskite was carefully studied by SEM, XRD, and AFM. The results reveal that the additive controls the size and aggregation of perovskite crystals and helps the formation of smooth film over TiO 2 completely. Thus, the V oc and J sc are greatly increased for a high efficiency solar cell. The amount of additive is optimized at 1 wt % due to its insulating characteristics. This research provides a facile way to fabricate a high efficiency perovskite solar cell by the low temperature solution process (<150 °C), which has the advancement of conserving energy over the traditional high temperature sintering TiO 2 compact layer device.

KW - coverage

KW - morphology

KW - perovskite solar cells

KW - polymer additive

KW - solution process

KW - TiO nanoparticle

UR - http://www.scopus.com/inward/record.url?scp=84924227191&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924227191&partnerID=8YFLogxK

U2 - 10.1021/acsami.5b00052

DO - 10.1021/acsami.5b00052

M3 - Article

AN - SCOPUS:84924227191

VL - 7

SP - 4955

EP - 4961

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 8

ER -