The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption

Wolfgang Tress; Nevena Marinova; Olle Inganas; Mohammad K. Nazeeruddin; Shaik M. Zakeeruddin; Michael Graetzel

doi:10.1109/PVSC.2014.6925216

The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption

Wolfgang Tress
, Nevena Marinova
, Olle Inganas
, Mohammad K. Nazeeruddin
, Shaik M. Zakeeruddin
, Michael Graetzel

Swiss Federal Institute of Technology Lausanne
Linköping University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

56 Citations (Scopus)

Abstract

The role of the hole-transport layer (HTL) in CHjNHPbb perovskite solar cells is investigated. It is found that it mainly serves three purposes: First, deposited prior to the gold electrode, it avoids direct contact of the metal electrode with the mesoporous TiO₂-perovskite layer, and therefore increases the selectivity of the contact. This reduces recombination as evident from an increased open-circuit voltage and a higher luminescence efficiency. Second, the HTL increases the internal quantum efficiency independent of applied voltage and illumination wavelength by reducing (diffusion) losses of charges. Third, due to a smoothing of the TiO₂-perovskite mesoscopic layer the HTL increases the reflectivity of the gold electrode, allowing for a second path of the light through the absorber. Both effects result in an enhancement of the short-circuit current density.

Original language	English
Title of host publication	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1563-1566
Number of pages	4
ISBN (Electronic)	9781479943982
DOIs	https://doi.org/10.1109/PVSC.2014.6925216
Publication status	Published - 15 Oct 2014
Externally published	Yes
Event	40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States Duration: 8 Jun 2014 → 13 Jun 2014

Publication series

Name	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

Conference

Conference	40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/Territory	United States
City	Denver
Period	8/06/14 → 13/06/14

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

hole transport layer
incident-photon-to-electron conversion efficiency
internal quantum efficiency
luminescence
perovskite
recombination
solar cell

Access to Document

10.1109/PVSC.2014.6925216

Cite this

Tress, W., Marinova, N., Inganas, O., Nazeeruddin, M. K., Zakeeruddin, S. M., & Graetzel, M. (2014). The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption. In 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014 (pp. 1563-1566). Article 6925216 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2014.6925216

Tress, Wolfgang ; Marinova, Nevena ; Inganas, Olle et al. / The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption. 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1563-1566 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

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title = "The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption",

abstract = "The role of the hole-transport layer (HTL) in CHjNHPbb perovskite solar cells is investigated. It is found that it mainly serves three purposes: First, deposited prior to the gold electrode, it avoids direct contact of the metal electrode with the mesoporous TiO2-perovskite layer, and therefore increases the selectivity of the contact. This reduces recombination as evident from an increased open-circuit voltage and a higher luminescence efficiency. Second, the HTL increases the internal quantum efficiency independent of applied voltage and illumination wavelength by reducing (diffusion) losses of charges. Third, due to a smoothing of the TiO2-perovskite mesoscopic layer the HTL increases the reflectivity of the gold electrode, allowing for a second path of the light through the absorber. Both effects result in an enhancement of the short-circuit current density.",

keywords = "hole transport layer, incident-photon-to-electron conversion efficiency, internal quantum efficiency, luminescence, perovskite, recombination, solar cell",

author = "Wolfgang Tress and Nevena Marinova and Olle Inganas and Nazeeruddin, \{Mohammad K.\} and Zakeeruddin, \{Shaik M.\} and Michael Graetzel",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 40th IEEE Photovoltaic Specialist Conference, PVSC 2014 ; Conference date: 08-06-2014 Through 13-06-2014",

year = "2014",

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doi = "10.1109/PVSC.2014.6925216",

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series = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",

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Tress, W, Marinova, N, Inganas, O, Nazeeruddin, MK, Zakeeruddin, SM & Graetzel, M 2014, The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption. in 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014., 6925216, 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014, Institute of Electrical and Electronics Engineers Inc., pp. 1563-1566, 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, United States, 8/06/14. https://doi.org/10.1109/PVSC.2014.6925216

The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption. / Tress, Wolfgang; Marinova, Nevena; Inganas, Olle et al.
2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1563-1566 6925216 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption

AU - Tress, Wolfgang

AU - Marinova, Nevena

AU - Inganas, Olle

AU - Nazeeruddin, Mohammad K.

AU - Zakeeruddin, Shaik M.

AU - Graetzel, Michael

PY - 2014/10/15

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N2 - The role of the hole-transport layer (HTL) in CHjNHPbb perovskite solar cells is investigated. It is found that it mainly serves three purposes: First, deposited prior to the gold electrode, it avoids direct contact of the metal electrode with the mesoporous TiO2-perovskite layer, and therefore increases the selectivity of the contact. This reduces recombination as evident from an increased open-circuit voltage and a higher luminescence efficiency. Second, the HTL increases the internal quantum efficiency independent of applied voltage and illumination wavelength by reducing (diffusion) losses of charges. Third, due to a smoothing of the TiO2-perovskite mesoscopic layer the HTL increases the reflectivity of the gold electrode, allowing for a second path of the light through the absorber. Both effects result in an enhancement of the short-circuit current density.

AB - The role of the hole-transport layer (HTL) in CHjNHPbb perovskite solar cells is investigated. It is found that it mainly serves three purposes: First, deposited prior to the gold electrode, it avoids direct contact of the metal electrode with the mesoporous TiO2-perovskite layer, and therefore increases the selectivity of the contact. This reduces recombination as evident from an increased open-circuit voltage and a higher luminescence efficiency. Second, the HTL increases the internal quantum efficiency independent of applied voltage and illumination wavelength by reducing (diffusion) losses of charges. Third, due to a smoothing of the TiO2-perovskite mesoscopic layer the HTL increases the reflectivity of the gold electrode, allowing for a second path of the light through the absorber. Both effects result in an enhancement of the short-circuit current density.

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KW - incident-photon-to-electron conversion efficiency

KW - internal quantum efficiency

KW - luminescence

KW - perovskite

KW - recombination

KW - solar cell

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BT - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

PB - Institute of Electrical and Electronics Engineers Inc.

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ER -

Tress W, Marinova N, Inganas O, Nazeeruddin MK, Zakeeruddin SM, Graetzel M. The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption. In 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1563-1566. 6925216. (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). doi: 10.1109/PVSC.2014.6925216

The role of the hole-transport layer in perovskite solar cells - Reducing recombination and increasing absorption

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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